around/about/approximately/roughly.导航词义：大约

1. around:adv. 大约.多用于非正式场合，常见于美国英语。也用作 around about。

She has around ten million US dollars in the bank.

她在银行里存有大约一千万美元。

Janet left here around seven o'clock.

珍妮特大约7点钟离开这里的。

2. about:adv. 大约.表示实际数量可多可少或数值、尺寸等可大可小，也作 round about。

They left the museum at about 10 o'clock.

他们10点左右离开了博物馆。

He lives about 5 miles away.

他住的地方离这里5英里左右。

3. approximately:adv. 大约.多用于书面语，强调接近精确数值、数量、时间等，误差较小。

The plane will be taking off in approximately ten minutes.

飞机大约10分钟后起飞。

He owes me approximately 400 US dollars.

他欠我大约400美元。

4. roughly:adv. 粗略地，大致上.指按粗略估计，不强调十分接近精确数值。

There were roughly 300 people there.

那里大约有300人。

The Antarctica is a continent centred roughly on the South Pole.

南极洲是一片大致以南极为中心的大陆。

全部

1·The journey took approximately seven hours.

旅程大约花了七个小时。《牛津词典》

2·The flight takes approximately three hours.

飞行时间大约需要三小时。《牛津词典》

3·At approximately 11:30 p.m., Pollard finally gave his consent to the search.

大约晚上11:30的时候，波拉德终于对搜查予以同意。《柯林斯英汉双解大词典》

4·Take approximately 60 mg up to four times a day, unless advised otherwise by a doctor.

每天4次，每次约60毫克，或遵医嘱。《柯林斯英汉双解大词典》

5·He was monitored in the recovery room for approximately 30 minutes following the anaesthesia.

麻醉后，他在观察病房中待了大约30分钟。《柯林斯英汉双解大词典》

6·Do anyone of you know approximately how much higher it goes?

你们中的任意一个知道它近似高出多少吗？

7·Kona and Hilo have approximately the same rainfall in a given year.

科纳和希洛在同一年的降雨量大致相同。

8·How much would you say is a mid-range bottle of wine approximately?

一瓶中档葡萄酒大约要多少钱？

9·Approximately 20 states prosecute these cases under existing criminal laws.

大约有20个州根据现有的刑事法律起诉这些案件。

10·The yolk contains all the fat and approximately half of the protein of the egg.

蛋黄含有鸡蛋中全部的脂肪和大约一半的蛋白质。

大约

1·The journey took approximately seven hours.

旅程大约花了七个小时。《牛津词典》

2·He was monitored in the recovery room for approximately 30 minutes following the anaesthesia.

麻醉后，他在观察病房中待了大约30分钟。《柯林斯英汉双解大词典》

3·At approximately 11:30 p.m., Pollard finally gave his consent to the search.

大约晚上11:30的时候，波拉德终于对搜查予以同意。《柯林斯英汉双解大词典》

4·How much would you say is a mid-range bottle of wine approximately?

一瓶中档葡萄酒大约要多少钱？

5·The yolk contains all the fat and approximately half of the protein of the egg.

蛋黄含有鸡蛋中全部的脂肪和大约一半的蛋白质。

近似地

1·Astronomers once assumed they had always orbited the Milky way at approximately their current distances, like the other, lesser satellite galaxies in the Milky way's gravitational thrall.

天文学家曾经假设它们总是像其它银河系引力束缚下更小的卫星星系的星云一样，在它们目前近似地距离上围绕银河系的轨道运行。

2·Doable, approximately. But the point is, we can actually now locate all those lines that we sort of arbitrarily drew on the phase diagrams.

是可以做的，近似地考虑，要强调的是，我们现在可以计算，相图里面的线了。

3·Only under the normal temperature and pressure does it approximately conform to the actual gas.

只有在常温、常压下，才近似地符合；

4·It is proved that in electron circular accelerator, the longitudinal distribution of particles in electron bunch can be approximately expressed as hollow distribution.

在电子环型加速器中可以证明，电子束团中粒子沿纵向的分布律可近似地表示成为空心分布。

5·The experimental result indicates that this relation approximately obeys the superposition principle.

结果表明，这个关系近似地符合相位叠加原则。

大致

1·Kona and Hilo have approximately the same rainfall in a given year.

科纳和希洛在同一年的降雨量大致相同。

2·Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact.

即使新的种群属于不同物种，它也可以大致填补已灭绝种群空出的生态位，保持食物网的完整。

3·As you increase the heap size on a consistent workload, the mark and sweep phases will continue to take approximately the same length of time.

当您增加统一工作负载上的堆大小时，标记和清扫阶段将继续花费大致相同的时间完成操作。

4·An equal number of villages and approximately equal Numbers of households and women were randomly sampled from both areas.

对这两个区域中相等数量的村庄以及大致相等数量的家庭和妇女进行随机抽样。

5·In fact, with the exception of column c, every run with biased locking turned on ended up providing approximately the same boost in performance.

事实上，除了C列以外，每次运行时如果开启偏向锁最终都会提供大致相同的性能提升。

近

1·Most deaths occur among children living in Africa where a child dies every 45 seconds of malaria and the disease accounts for approximately 20% of all childhood deaths.

大多数死亡发生在非洲儿童中，那里每45秒钟便有一名儿童死于疟疾，死于此病的儿童数目占儿童死亡总数的近20%。

2·When you group together all the unique languages and countries in the world, there are approximately 350 cultures that need to be supported.

当您将世界上的所有这些惟一的语言和国家进行排列组合时，会发现有近350种文化需要受到支持。

3·Approximately one-in-six US workers have directly experienced destructive bullying in the last year.

近六分之一的美国劳动者去年直接经历了具有破坏性的欺负行为。

4·Your brain continues to send out electrical wave signals approximately 37 hours after death.

大脑在死后近37个小时还将持续发出电波信号。

5·Visible severe wasting failed to detect approximately half of the children admitted to hospital with severe acute malnutrition diagnosed anthropometrically.

可见的严重消瘦未能确定出近一半的通过人体测量方法诊断出的患有严重急性营养不良的入院儿童。

约为

1·High school enrollment rates were approximately 56% nationwide but were lower in Mindanao and in Eastern Visayas region.

高中的入学率全国约为56%，但是在棉兰老岛和西维萨·亚斯群岛地区中较低。

2·The testing that is described demonstrated that EFDs provide a substantial improvement (approximately 9X) in I/O performance when used in an OLTP database environment.

所讨论的这个测试说明了 EFD 用在一个 OLTP 数据库环境时能大大提高 I/O 性能（约为 9 倍）。

3·As Figure 4 illustrates, this time approximately 4,000 IOPS were measured on the front end.

正如图4所显示的，这一次在前端所测得的IOPS值约为4,000。

4·Coal currently costs approximately 7 cents a watt, compared to 22 cents for solar.

用煤发一瓦特电的当前成本约为7美分，而用太阳能发一瓦特电为22美分。

5·Steers weighing approximately 700 pounds are forced to run at top speed while the roper throws the rope around the steer's horns.

体重约为700磅的牛被强迫以高速奔跑，突然参赛者扔出绳子绕住牛角。

约有

1·Approximately 30 compounds including methyl salicylate have been identified in the aroma of green tea.

约有30种化合物已从绿茶的香气中鉴别出来，其中包括水杨酸苄酯。

2·Every day, approximately 1000 women die from preventable causes related to pregnancy and childbirth.

每天，约有1000名妇女死于与妊娠和分娩有关的可预防疾病。

3·Home to 400 coral species, the Great Barrier reef is a Mosaic of approximately 2, 900 offshore and inshore reefs.

大堡礁是400种珊瑚的产地，是个约有2 900种远海有和近海珊瑚礁的大拼盘。

4·The division employs approximately 35 people.

该分部约有雇员35名。

5·Official figures show that more than 213 000 people mainly in Asia and Africa are infected, with approximately 249 000 new cases reported in 2008.

官方数据显示感染者达21.3万多人，主要在亚洲和非洲，而2008年约有24.9万例是报告的新病例。

大约为

1·The not-so-romantically named (101955) 1999 RQ36 -- discovered in 1999 -- measures approximately 510 meters in diameter and is classified as an Apollo asteroid.

这个小行星的命名并不浪漫——被称为（101955）1999RQ36，发现于1999年，其直径大约为510米，归类为“阿波罗型小行星”。

2·The initial timeout value is 100000000 ms, which is approximately 28 hours. Use the mqsichangeproperties command to change the values of needCache and timout, using the syntax below

初始的 timeout 值为 100000000 毫秒，大约为 28 小时。

3·Vehicles spend a period of time in an Open Loop air-fuel ratio programming until the oxygen sensors heat up to proper operating temperature of approximately 316 degrees Celsius.

汽车需要在开环空燃比程序上花费一段时间以达到氧传感器的工作温度大约为316摄氏度。

4·Taken together, these companies would make up an economy approximately one third of the size of the euro area.

加在一起，这些公司形成的经济体的规模大约为欧元区的三分之一。

5·Our office has approximately one million in sales.

我们办事处的销售额大约为一百万。

左右

1·Other studies indicate that compared to Western parents, Chinese parents spend approximately 10 times as long every day drilling academic activities with their children.

其他调查结果显示，中国父母比西方父母每天会多花10倍左右的时间和孩子一起探讨学业。

2·At the user count values of approximately 325 (for example, more than 300 and less than 350) and below, system 704 had the best system performance.

当用户数量在325左右(比如，介于300和350之间)或以下时，系统704拥有最佳的系统性能。

3·It is a brief summary of approximately 300 words.

是一个300字左右的简要归纳。

4·Sentenced to four years in jail, Li won release last December approximately a year early.

李俊被判四年有期徒刑，去年12月提前一年左右获释。

5·For historical and demographic reasons, the child population in Russia decreased by approximately 12 million over the last 13 years.

基于历史和人口的原因，俄罗斯青少年人口数量在过去13年里下降了1200万左右，平均每年100万人。

(1)approximately equal约等于，近似等于