prevent 高考四级六级考研

I have been unavoidably prevented from coming.

我身不由己, 不能前往。

It is the job of the police to prevent crime.

防犯罪是警察职责。

The task will be finished ahead of schedule if nothing prevents.

"如果没有什么话,这项任务将提前完成。"

Rebellious students stubbornly demanded that the CIA be prevented from recruiting on campus.

反生们坚决要求不准中央情报局在校里招募人员。

The importance of washing one's hands before a meal is that it prevents infection.

饭前洗手重要性在于防传染。

Vitamin C is supposed to prevent colds.

维生素C可以预防感冒。

Rheumatism prevents him form bending his back.

风湿病使他不能弯腰。

Prevent stern red anthema and cross infection.

可避免交叉感染。

Only her quick reaction prevented an accident.

她快捷反应避免了一次事故。

It is hard to prevent concrete from creeping.

很难防水泥变形。

The diluent could prevent trimebutine maleate from precipitation.

能较好地马来酸曲美布丁结晶析出。

A fireguard prevents children getting near the fire.

炉挡防孩子们靠近炉火。

What prevented you from joining us last night?

昨天晚上什么事使你不能参加我们晚会?

We were prevented by heavy smog from seeing anything.

浓雾使我们看不到任何东西。

Always keep food covered to prevent contamination by flies.

时常把食物盖着以防苍蝇污染。

The wood is treated with preservative to prevent decay.

这块木头用防腐剂处理过以防腐烂。

Many interruptions have prevented me from finishing the work.

许多打岔事使得我未能完成这项工作。

The police tried to prevent infiltration by drug traffickers.

警方尽力毒品走私分子潜入。

Numerous interruptions have prevented me from finishing the work.

数不清干扰使我未能完成这项工作。

Sharp corners should be radiused to prevent arc over.

这是所有剪裁下来片子。