It usually takes more than three weeks to prepare a good impromptu speech.

Although they tried very hard, they failed on the verge of success because of improper approach.

他们付出了很大的努力, 但终因方法欠妥功败垂成.

Is it improper for such doing?

这么做有什么不好哇?

Take the following precautions to prevent injuries caused by the improper handling of compressed gas cylinders.

提高如下警惕,以防止错误操作压缩气体钢瓶造成的伤害.

The committee concluded that the senators had engaged in improper conduct.

委员会断定议员们从事了不正当活动.

Assisting to examining, appraising the status of safety system and correcting improper performance.

协助调查 、 评估与完善安全体系的状态与绩效.

He would never be improper, he is always the perfect gentleman.

他总是举止得体，一直是个完美的绅士。

Short trousers are improper at a dance.

舞会上穿短裤不成体统.

It is improper for us to look at new matters through an old lens.

我们不应该以定式来看待新兴事物.

In addition, the stress concentration caused by improper machining was also the reason of fracture.

另外机加工不当造成的应力集中加速了拉杆的断裂.

What an improper suggestion!

多么不体面的建议!

Mr Matthews maintained that he had done nothing improper.

马修斯先生坚称他没有做过非法的事情。

Objective: Analyze the dynamics feature of the common improper movement of the rolling manipulation.

目的:分 析推拿法常见错误动作的动力学特征.

As far as we can make out, the damage is due to improper packing.

根据我们弄清的事实, 货损是因包装不善而造成的.

There is any other situation for which continued margin purchase or short sale transaction is improper.

九其他不适宜继续融资融券交易之情事者.

Improper bolt tightening procedure.

螺栓拧紧程序错误.

Don't make presumptuous comments out of ignorance. Don't make improper comments before you know the whole story.

不要不明原委,就妄加评论.

It's considered improper to be unclothed in public.

在公共场合赤身裸体被认为是不成体统的。

Executives at other banks say that is improper.

其它银行的高管表示,这种做法是不当的.

Convert a mixed number to an improper fraction.

把带分数转换成假分数.

Convert an improper fraction to a mixed number.

把假分数转换成带分数.