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1·These methods prevent pregnancy.

这些方法预防怀孕。《柯林斯英汉双解大词典》

2·We are taking steps to prevent pollution.

我们正在采取措施防止污染。《牛津词典》

3·Regular exercise helps prevent weight gain.

经常锻炼有助于防止体重增加。《牛津词典》

4·Precautions had to be taken to prevent pilfering.

应采取预防措施来避免偷窃。《柯林斯英汉双解大词典》

5·The floor is sealed to prevent water penetration.

地板加了密封涂料防止渗水。《牛津词典》

6·They were trying to prevent an even worse tragedy.

他们正在设法避免更大的悲剧发生。《牛津词典》

7·Further treatment will prevent cancer from developing.

进一步治疗将预防癌症恶化。《柯林斯英汉双解大词典》

8·We hope to prevent anything unpleasant from happening.

我们希望防止任何不愉快的事发生。《牛津词典》

9·The bride's family were scheming to prevent a wedding.

新娘的家人在密谋阻止婚礼。《柯林斯英汉双解大词典》

10·This can prevent air from flowing freely to the lungs.

这可以防止空气任意流入肺部。《牛津词典》

防止

1·Regular exercise helps prevent weight gain.

经常锻炼有助于防止体重增加。《牛津词典》

2·This can prevent air from flowing freely to the lungs.

这可以防止空气任意流入肺部。《牛津词典》

3·We hope to prevent anything unpleasant from happening.

我们希望防止任何不愉快的事发生。《牛津词典》

4·Early diagnosis and treatment can usually prevent blindness.

早期诊断和治疗通常可以防止失明。《柯林斯英汉双解大词典》

5·Family control would prevent any hostile takeover or greenmail attempt.

家族控制可以防止任何恶意收购或绿票讹诈的企图。《柯林斯英汉双解大词典》

预防

1·These methods prevent pregnancy.

这些方法预防怀孕。《柯林斯英汉双解大词典》

2·Further treatment will prevent cancer from developing.

进一步治疗将预防癌症恶化。《柯林斯英汉双解大词典》

3·All you can do to prevent potato blight is keep an eye on your crops.

为预防马铃薯枯萎病你惟一能做的就是留意你的庄稼。《柯林斯英汉双解大词典》

4·Lemon juice can help to prevent economy-class syndrome by improving blood circulation.

柠檬汁通过改善血液循环来帮助预防经济舱综合症。《柯林斯英汉双解大词典》

5·Although the causes of cancer are being uncovered, we do not yet have any practical way to prevent it.

尽管癌症的病因正被揭开，但我们还没有任何预防它的有效的方法。《柯林斯英汉双解大词典》

阻止

1·The bride's family were scheming to prevent a wedding.

新娘的家人在密谋阻止婚礼。《柯林斯英汉双解大词典》

2·He said this would prevent companies from creating new jobs.

他说这将阻止各公司创造新的职位。《柯林斯英汉双解大词典》

3·Nothing would prevent him from speaking out against injustice.

什么都不能阻止他鸣不平。《牛津词典》

4·The security forces had to intervene to prevent the situation worsening.

那些安全部队不得不干预以阻止形势变得更糟。《柯林斯英汉双解大词典》

5·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。《牛津词典》

防

1·In hacking, it is more like a challenge that I can do better than you, I can eliminate all the security components you've installed on your system to prevent hacking.

在黑客领域，真正的挑战是我可以做得比你更好，我可以清楚掉你的系统上装的所有防入侵安全组件。

2·This food additive is often used as an anti-fermentation agent to prevent bottled wine from turning into vinegar.

这是一种常作为防发酵成分添加在食品当中的药剂，有了它，瓶装红酒就不会发酵成瓶装醋了。

3·Studies can only give snapshots of the immediate situation. Counterfeiters are extremely flexible in the methods they use to mimic products and prevent their detection.

调查研究只能针对一段时期内的情况进行分析，而造假者在产品仿冒的制作方法和防检测手段上很灵活，他们能够很快改变方法。

4·Of course, I am not boasting the significance of getting ailments, nor am I encouraging you to get small disease in order to prevent severe one!

当然，我不是在吹嘘生小病的重要性，更不是鼓励大家努力“生小病”来防“大病”。

5·But this is unlikely to prevent the presence at the event, scheduled for August 16-21 in Madrid, of a group of Nepalese young people who will be attending unofficially.

不过，这不会防碍年轻人自组团体，以非官方身分出席定于八月十六至廿一日在西班牙马德里举行的全活动。

妨碍

1·Relative poverty, however, did not prevent Martin from equipping himself with an excellent education.

然而相对的贫穷并没有妨碍马丁接受良好教育。《柯林斯英汉双解大词典》

2·It may prevent making a timely decision.

这可能会妨碍及时做出决定。

3·Discrimination against women in the workplace would only prevent companies from high efficiency.

职场上歧视女性的行为只会妨碍公司取得高效率。

4·Forcing a child to behave morally may prevent her from internalizing the lesson you're trying to impart.

强迫孩子按道德行事可能会妨碍她将你试图传授的教训内化。

5·High-speed electronic communications media, such as electronic mail an television, tend to prevent meaningful and thoughtful communication.

高速的电子通讯媒介，如电子邮件和电视，往往会妨碍有意义和有思想的交流。

(1)prevent from阻止，制止；妨碍

(1)prevent and control pollution防治污染；预防和控制污染