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1·Tiredness affects your powers of concentration.

疲劳影响注意力的集中。《牛津词典》

2·The drug may affect your powers of concentration.

这种药可能会影响你的注意力集中。《牛津词典》

3·You cannot afford to relax your concentration for a moment.

你必须集中精力，一刻都不能松懈。《牛津词典》

4·No studies found that eating breakfast was bad for concentration.

没有研究发现吃早餐不利于注意力的集中。

5·The processes of arousal and concentration give attention its direction.

觉醒和集中的过程为注意力提供了方向。

6·Concentration of the samurai in castle-towns had acted as a stimulus to trade.

武士在城堡城镇的集中刺激了贸易的发展。

7·Soil samples from these pens or corrals show ten times the concentration of phosphorus.

来自这些围栏或畜栏的土壤样本显示，磷的浓度是其10倍。

8·The present Road Traffic Ordinance states clearly that the limit of alcohol concentration.

现行道路交通条例清楚地规定了酒精浓度的上限。

9·There's a lag phase, and there's a slow rise to an intermediate level of antibody concentration.

有一个迟滞期，抗体浓度缓慢上升至中间水平。

10·Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton.

根据浮游植物的种类和浓度，海洋颜色有从绿色到蓝色不等。

浓度

1·Soil samples from these pens or corrals show ten times the concentration of phosphorus.

来自这些围栏或畜栏的土壤样本显示，磷的浓度是其10倍。

2·The present Road Traffic Ordinance states clearly that the limit of alcohol concentration.

现行道路交通条例清楚地规定了酒精浓度的上限。

3·There's a lag phase, and there's a slow rise to an intermediate level of antibody concentration.

有一个迟滞期，抗体浓度缓慢上升至中间水平。

4·Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton.

根据浮游植物的种类和浓度，海洋颜色有从绿色到蓝色不等。

5·Your dentist can prescribe a stronger concentration of fluoride in a gel, toothpaste or rinse if you need it.

如果你需要的话，你的牙医可以给你开更高浓度含氟凝胶，牙膏或漱口剂。

集中

1·Tiredness affects your powers of concentration.

疲劳影响注意力的集中。《牛津词典》

2·The processes of arousal and concentration give attention its direction.

觉醒和集中的过程为注意力提供了方向。

3·It seems clear that the concentration of research and commercialisation work creates differences between universities.

很明显，研究和商业化工作的集中造成了大学之间的差异。

4·The potential of this work applied to healthcare is very great, but it could also lead to further concentration of power in the tech giants.

这一技术应用于医疗保健领域的潜力非常大，但也可能导致科技巨头权力的进一步集中。

5·In practice in Tokyo, because of the relative concentration of schools, there is some competition to get into the better school in a particular area.

在东京的惯例中，由于学校相对集中，在某个特定地区进入“更好”的学校存在一些竞争。

浓缩

1·In a second experiment, the Jena scientists examined exactly this range of concentration in the model organism C. elegans.

耶拿的科学家又在一次实验中准确检查了模式生物秀丽隐杆线虫中的浓缩范围。

2·The morning songs were the first throwing forth of my inner self outwards, and consequently they lack any signs of such concentration.

《晨歌集》是我心中的自我第一次迸发出来，因此缺乏这种浓缩的任何表征。

3·The lycopene in tomatoes is at its highest concentration when the vegetable has been cooked - a link has already been established between lycopene and a reduction in the risk of prostate cancer.

当蔬菜被煮熟，番茄中的番茄红素便得到它的最大浓缩——这条链已被建立在番茄红素能减少得前列腺癌的风险中。

4·We discovered that the concentration of energy in the nucleus of the atom is 2 million times as great as energy in the shell of an atom.

我们发现原子核中浓缩的能量是原子电子层能量的2百万倍。

5·Increased use of promising methods of diagnosis such as sputum liquefaction and concentration and increased availability of fluorescence microscopy should be explored and encouraged.

应该开发并鼓励增加使用有希望的诊断方法如痰液化和浓缩并增加荧光显微镜术的利用率。

专注

1·She was possessed of exceptional powers of concentration.

她有高超的专注能力。《牛津词典》

2·It's a method of active concentration I read about.

这是我读到过的一种保持积极专注的方法。

3·Most children believe that more space should be given to real-life communication, which could boost honesty, trust and concentration.

大多数孩子认为，应该给现实生活中的交流更多的空间，这样可以促进诚实、信任和专注。

4·He has two concentration areas in Psychology and Applied Mathematics.

他专注于两个专业领域：心理学和应用数学。

5·Use it: once you know your best hours, use those for your hardest tasks - anything requiring lots of concentration or creativity.

使用它：一旦你知道你的效率最高的时段，在这时段内去完成最艰难的任务——任何事情需要你的专注和创造。

专心

1·QYKJ survives with the oath of professionalism, devotement, concentration, completeness, quality and energy conservation.

清阳洁净科技谨以专业、专注、专心、全面、品质、节能为生存格言。

2·Any activity that requires too much concentration, such as reading a novel or a long article, demands your focus, so you slow down physically.

任何活动都需要很专心，比如阅读一篇小说或者一篇很长的文章，需要你的聚焦，所以你自然地放慢了。

3·This is so that you don't squander your efforts or concentration.

如此这般你就不会浪费你的努力或专心了。

4·When group together, tasks require a lot less time, effort and concentration.

当归类到一起，任务就会更少花费你的时间、努力和专心。

5·In ordinary life, we tend to equate focus with concentration.

在日常生活，我们常把焦点等同于专心。

集聚

1·The reason is the spatial concentration of population and resources had the effect of increasing returns to scale.

原因是人口和资源的空间集聚产生了规模收益递增的效应。

2·They all accumulated on the surface of rice root system in the medium with higher ammonia concentration, while the wild type strains were removed from rice root surface in the same condition.

这些转化结合子在高铵下表现出固氮活性，并能集聚在水稻根表，而野生型菌在相同条件下远离水稻根表。

3·Industrial cluster is a phenomenon of spatial concentration of the industries linked in close economic relations in special locations, and it is characterized by path choice of special location.

产业集群是具有密切经济联系的产业在特定区位的空间集聚现象，具有对特定区位的路径选择特征。

4·Demonstration planned for an area of 14.67 square kilometers of industrial concentration in the Shop area, industrial layout adjustment for the county to lay the foundation.

论证规划了占地14.67平方公里的中铺工业集聚区，为全县工业布局调整奠定了基础。

5·And, using 1994 to 2006 data to study China's agricultural industry concentration level and distribution of the status.

然后，用1994年到2006年的数据来考察中国农产品工业的集聚程度和分布现状。

专注力

1·Breakfast is also associated with improved brain function, including concentration and language use.

早餐还能增强大脑功能，包括专注力和语言运用能力。

2·All these activities can prevent the growth of important communication and thinking skills and make it difficult for kids to develop the kind of sustained concentration they will need for most jobs.

所有这些活动都会阻碍重要的沟通和思考技能的发展，使孩子们很难培养出大多数工作所需要的那种持续的专注力。

3·This regimen will improve your focus and concentration, which in turn, helps you be more efficient and productive.

这种养生法将改善你的注意力和专注力，这些反过来有助于你更有效率。

4·The papers Newton left behind testify to the incredible powers of concentration of the genius who opened the door to the age of technology.

牛顿留下的研究论述证明了这位开启科技时代大门的天才拥有惊人的专注力。

5·Although many of the factors affecting concentration are beyond your control, a large amount is determined by behavior.

尽管专注力被很多超出你可控范围的因素影响着，但是很大程度上还是被你的行为所影响。

集中精神

1·The ability to return to concentration and work; the ability to rediscover interest in life, and take pleasure in it, while recognizing that present pleasure is far from past joy.

能够再次集中精神并恢复工作。能够重新发现生活的乐趣——尽管认为其远不如过去快乐，但仍并乐于享受。

2·Poor judgment skills, poor concentration, and inability to make decisions.

判断力不足，难以集中精神，且不能做决策。

3·As a simultaneous translator I must listen and translate with great concentration.

作为一个同声传译工作者，我必须非常集中精神地听和翻译。

4·Yet in fact, concentration, analytical and problem solving skills can be enhanced by studying math.

其实，学习数学可使我们更懂得集中精神，并分析和解决问题。

5·Monks also meditate in caves and coffins, where the absolute darkness enhances concentration.

僧侣们还会在洞穴和棺材里冥想，里面绝对的黑暗有助于集中精神。

浓度值

1·The critical electrolyte concentration of MCs was also lower too in periodontitis patients.

牙周炎组肥大细胞的临界电解质浓度值也较低。

2·Daily average concentration of various pollutants also has a close correlation with ground wind velocity.

各种污染物日平均浓度值与地面风速相关也非常好。

3·The variation of aerosol particles concentration in rainy day had apparent relation to the aerosols concentration a day before the rainy day.

同时拟合结果表明降水日气溶胶浓度的改变量与其前一日气溶胶浓度值存在较好的相关特性。

4·Thus, the monitoring values obtatined can only represent the instantaneous concentration of pollutant.

监测值是瞬时浓度值，测次愈少代表性愈差。

5·These low critical concentration values also imply that the chain rigidity of chitosan is larger than that of cellulosic chain.

低的临界浓度值表明壳聚糖的链刚性比纤维素的大。

(1)concentration of sth集中；聚集

(1)high concentration高浓度，高强度

(1)stress concentration应力集中

(1)concentration on注意力集中于…

(1)low concentration低浓度；低集中度

(1)gas concentration气体浓度；气含量