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1·Research shows that this could be mainly caused by improper use of backpacks.

研究表明，这可能主要是由于使用背包不当造成的。

2·What's considered typical or proper social conduct in one country may be regard as odd, improper or even rude in the other.

在一个国家中被认为是典型或适当的社会行为，在另一个国家中可能被视为古怪，不当甚至粗鲁的行为。

3·Disputes between parents, breakdown of a family and improper ways of education can lead to adolescents forming negative personalities and even committing an offence.

父母冲突、破碎家庭、教育方法不当以及家庭环境影响都会导致青少年形成不良个性，甚至走上犯罪的道路。

4·It would be improper to comment at this stage.

在这个阶段发表评论并不恰当。《牛津词典》

5·Its image has been sullied by $9 billion in improper accounting.

其形象被90亿的假账所毁。《柯林斯英汉双解大词典》

6·The improper use of medicine could lead to severe adverse reactions.

用药不当会引起严重的不良反应。《柯林斯英汉双解大词典》

7·25 officers were investigated following allegations of improper conduct.

25名警官被指控行为不当而受到调查。《柯林斯英汉双解大词典》

8·Such improper behaviour and language from a young lady left me momentarily incapable of speech.

如此不得体的言行竟来自一位年轻女士，这让我惊愕得一时无语。《柯林斯英汉双解大词典》

9·Over the past ten years, some improper names have caused problems.

在过去的十年里，一些不适当的名字带来了许多问题。

10·Don't be quick to get involved when your children make an improper choice.

当你的孩子做出错误的选择时，不要急于介入。

不当

1·What's considered typical or proper social conduct in one country may be regard as odd, improper or even rude in the other.

在一个国家中被认为是典型或适当的社会行为，在另一个国家中可能被视为古怪，不当甚至粗鲁的行为。

2·Disputes between parents, breakdown of a family and improper ways of education can lead to adolescents forming negative personalities and even committing an offence.

父母冲突、破碎家庭、教育方法不当以及家庭环境影响都会导致青少年形成不良个性，甚至走上犯罪的道路。

3·The improper use of medicine could lead to severe adverse reactions.

用药不当会引起严重的不良反应。《柯林斯英汉双解大词典》

4·The company never mentioned anything about improper payments for contracts when it gave her that assignment, she says.

但是公司在给她任务时从未提及任何关于合同的不当支付的事项，她说。

5·One hopes that the regulations may at least prevent some food poisonings caused by the improper handling of fish and shellfish.

人们只有寄望于，这些规定或许至少可防止某些因鱼类和贝类处理不当引起的食物中毒。

不正当

1·Besides, it is a painful fact that boys obtain money needed for their love in an improper way.

此外，一个令人感到痛心的事实是男生为了恋爱用不正当的方法获取钱财。

2·Strauss-Kahn became embroiled in controversy soon after joining the IMF, amid reports -- which he later acknowledged -- that he'd had an improper relationship with a female employee.

在加入IMF不久后，卡恩就开始备受争议。 一些报道称，卡恩承认自己曾和一位女职员有不正当关系。

3·The indictment also alleges the four used 'improper' means to obtain Chinese commercial secrets from steelmakers.

起诉书还称，四人采用了“不正当”手段从钢铁公司手中获取了中国方面的商业秘密。

4·In fact, said the country's property market through improper means Wenzhou People really do not have much real basis.

事实上，说该国的房地产市场，通过不正当手段温州人真的没有多少真正的基础。

5·The admission of improper payments, after an 18-month internal investigation, could lead to fines and possible criminal action in the US and Germany.

在18个月的公司内部调查后，公司承认“不正当支出”可能导致在美国和德国受到罚款，还可能受到刑事指控。

不适当的

1·He said, We cannot do improper things on an impulse.

他说：“我们不能凭冲动而做不适当的事情。”

2·We take this work seriously and guard against the influence of any improper interests.

我们严肃地对待这项工作，避免受到任何不适当利益的影响。

3·First, they can use it as a debugging tool when confronted with a program bug or defect that seems to be related to improper memory usage.

首先，当您遇到一个程序错误或者看起来是与不适当使用内存相关的缺陷时，您可以把它当作一个程序调整工具来使用。

4·Don't you know that is improper behavior?

你不知道那是不适当的行为吗？

5·The improper configuration unnecessarily increases CPU utilization, which negatively impacts overall system performance.

不适当的配置会不必要地增加cpu利用率，从而损害总体系统性能。

不恰当

1·He considered all such inquiries on the part of a slave improper and impertinent.

他认为奴隶的这种询问是不恰当和无礼的。

2·Fortunately, these disease share a limited number of risk factors linked to behaviours that can be modified: tobacco use, improper diet, lack of physical activity, and the harmful use of alcohol.

幸运的是，这些疾病共同涉及与可以改变的行为相关联的一些为数有限的风险因素：烟草使用、不恰当饮食、缺乏运动和酒精的有害使用。

3·The following examples show improper configurations which lead to problems.

下面的例子展示了会导致问题的不恰当配置。

4·But it also stipulates that improper behaviour that flouts local customs may lead to fines, prosecution or deportation.

但它同时又规定任何藐视地方习俗的不恰当行为都可能导致罚款，遭到诉讼或被驱逐出境。

5·At the end of the experiment, a little girl told me, Apart from the fact that improper replication of the DNA molecule causes genetic disease, we have understood nothing else.

实验结束时，一个小女孩告诉我，“除了知道不恰当复制DNA分子会引起基因疾病这一事实外，其它的就不理解了。”

不正确的

1·Coding bugs cause improper program behavior (behavior deviating from the requirements).

编码错误会导致不正确的程序行为(偏离需求的行为)。

2·But improper screaming of the fans can lead to nodules and polyps on vocal folds. My main concern is their health.

但是球迷们不正确的尖叫可能导致声带囊肿或息肉，我主要是为他们的健康考虑。

3·Invalid pages often have missing closing tags, improper nesting of your HTML tags, and even problems with CSS style tags.

无效页面通常缺少结束标记，HTML标记嵌套不正确，甚至css样式标记的问题。

4·There are several factors that adversely affect performance, such as improper design of the data model (for example, creating a need for multidimensional arrays in your data model).

有几个因素会对性能产生负面影响，如数据模型的设计不正确（例如，在您的数据模型中产生对多维数组的需求）。

5·Use of attributes as data elements (improper use of attributes).

将属性用作数据元素(不正确的属性用法)。

不合适的

1·Laughing and joking are improper at a funeral.

葬礼时大笑和开玩笑是不合适的。《新英汉大辞典》

2·People in improper dresses, with slippers on and drunkard should not.

穿着不合适的服饰，穿拖鞋和醉汉不允许进入保龄球场。

3·Improper USES will damage the performance of the batteries, and reduce the life of batteries, it will even make batteries overheat, smoke, deformation or burn.

不合适的使用条件会损坏电池的性能、降低寿命，甚至会使电池发热、冒烟、变形或燃烧。

4·The internal protection devices and circuit inside batteries can avoid possible dangers. Improper disassembly will damage the protection function and causes heating, smoking or burning.

电池内部具有保护机构和保护电路可以避免发生危险。不合适的拆装将会损坏保护功能，将会造成电池发热、冒烟、变形或燃烧。

5·Improper synaptic growth may explain a portion of these unknown cases.

不合适的突触生长可能解释一部分此种未知的病例。

失当

1·Stop should be stopped and action never before, will not be improper, not involuntarily.

停止应当停止与行动未始之前，才不会失当，不会身不由己。

不妥

1·Of course, there is nothing improper for growing flowers with washbowls, ploughing with horse or taking the pen as chopstick, but their merit is wasted and it is a distortion of nature.

当然，用脸盆来种花，用马来耕地和用铅笔当筷子也并没什么不妥，只是它们的优势被浪费了，这是对其本质的歪曲。

2·The meaning of the carried over elements may not have changed and so a namespace change may seem improper.

继续保留的元素含义可能不会改变，因此改变名称空间似乎是不妥的。

3·It shall not be improper for a party, its officers, employees, legal advisors or counsel to interview witnesses, potential witnesses or expert witnesses.

当事人一方及其管理人员、雇员、法律顾问或律师对证人、潜在证人或专家证人进行询问并无不妥。

4·I think procuratorial interpretation exists as one social being for long time in our country, it is improper to totally repudiate rashly.

笔者认为，检察解释在我国作为一个社会存在已经有了较长一段时间，贸然全盘否定是不妥的。

5·Minor burn is common in everyday life, people tend to think of themselves, but if the improper operation, has the potential to cause serious harm or missed the best opportunity to improve prognosis.

细微烫伤在日常生活中很常见，人们常常以为自行处置即可，可是假如操作不妥，有可能形成严重危险或错过改善预后地最佳机遇。

错误的

1·A common syntax error is improper nesting of parent and child elements.

一个常见的语法错误是父元素和子元素的错误嵌套。

2·Furthermore, transport of seafood imports over long distances presents opportunities for contamination and decomposition due to improper handling and refrigeration.

此外，进口海鲜长距离的运输过程会由于处理或者制冷出现错误给了微生物污染和分解的机会。

3·As mentioned above, many types of memory usage errors are insidious: the program appears to behave normally, even though it's at risk for memory corruption and improper behavior.

正如上面所提到的，许多内存使用错误都是潜伏的：程序似乎在正常地运行，即使它所面临着内存崩溃或者错误行为的危险。

4·Improper use of node test text .

错误使用节点测试text 。

5·To be honest, improper time management causes a lot of stress and anxiety.

事实上，错误的时间管理会导致压力和忧虑。

(1)improper packing包装不妥

(1)improper behavior不当行为

(1)improper handling处理不当；搬运不当；操作不当

(1)improper integral反常积分；[数]广义积分