prevents

Prevents egress of the latter through the unsealed portion .

阻止后者通过未接合部分出来。

They lack water-storing structures , and their existence on rock faces prevents them from tapping groundwater , so they have instead developed the ability to change their metabolism .

它们缺乏蓄水结构，而且它们生长在岩石表面，这阻止了它们利用地下水，所以它们反而形成了改变其新陈代谢的能力。

They took active steps to prevent the spread of the disease .

他们采取积极措施，防止疾病蔓延。

Nothing would prevent him / his speaking out against injustice .

什么也阻挡不了他为不平之事鸣冤叫屈。

We are taking steps to prevent pollution .

我们正在采取措施防止污染。

They were trying to prevent an even worse tragedy .

他们正在设法避免更大的悲剧发生。

Nothing would prevent him from speaking out against injustice .

什么都不能阻止他鸣不平。

The floor is sealed to prevent water penetration .

地板加了密封涂料防止渗水。

This can prevent air from flowing freely to the lungs .

这可以防止空气任意流入肺部。

Dressings are changed four hourly to help prevent infection .

每四小时更换一次敷料，以防感染。

Regular exercise helps prevent weight gain .

经常锻炼有助于防止体重增加。

The condition prevents the blood from circulating freely .

这种病阻碍了血液的循环畅通。

Put a lid on to prevent heat escaping .

盖上盖子，以免热气跑了。

It was too late to prevent the story from appearing in the national newspapers .

要阻止全国性报纸刊登这件事情已为时太晚。

We hope to prevent anything unpleasant from happening .

我们希望防止任何不愉快的事发生。

Be sure to wear the correct footwear to prevent injuries to your feet .

一定要穿合适的鞋，以免脚受伤。

The drug prevents the virus from replicating itself .

这种药能防止病毒复制。

Prisoners have been placed on lockdown to prevent further violence at the jail .

已对囚犯实行活动限制，以免狱中再出现暴力行为。

He said this would prevent companies from creating new jobs

他说这将使公司无法创造新的工作机会。

Further treatment will prevent cancer from developing

进一步的治疗将阻止癌症恶化。

Early identification of a disease can prevent death and illness

病症的及早诊断可避免死亡与病痛。

The police have been trying to prevent them carrying weapons .

警方一直都设法阻止他们携带武器。

The packaging must provide an effective barrier to prevent contamination of the product .

包装必须提供有效的保护，以免产品受污染。

The security forces had to intervene to prevent the situation worsening

安全部队不得不介入，以防止局势进一步恶化。

We recognized the possibility and took steps to prevent it happening .

我们认识到了这种可能性，并且采取了一些预防措施。

Your community officer can give you advice on how to prevent crime in your area

社区工作人员能就如何预防社区内犯罪提供一些忠告。

As their roots are strong and penetrating , they prevent erosion .

它们的根十分粗壮而且扎得很深，从而避免了受侵蚀。

Today the city government has taken measures to prevent a repetition of last year 's confrontation

今天市政府已经采取措施，防止去年的冲突重演。

A dentist may decide to extract the tooth to prevent recurrent trouble

牙医可能会决定拔掉那颗牙，以免反复发作。

Vitamin K is routinely given in the first week of life to prevent bleeding .

出生后第一周通常要服用维生素K，以防止出血。