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1·The accident could have been prevented.

这次事故本来是可以防止的。《牛津词典》

2·Its nationals may be prevented from leaving the country.

其公民可能会被阻止离开该国。《柯林斯英汉双解大词典》

3·A nasty incident was prevented by the timely arrival of the police.

警察的及时到来阻止了一次严重事故。《牛津词典》

4·Early warnings of rising water levels prevented another major catastrophe.

提前发出的洪水水位上涨警报防止了又一次的重大灾害。《牛津词典》

5·He finally snapped when she prevented their children from visiting him one weekend.

当她阻止孩子们在一周末来探望他时，他终于失控发怒了。《柯林斯英汉双解大词典》

6·How can the disease be prevented?

怎样才能预防这种疾病？

7·DDT prevented eagle eggshells from thickening.

DDT 会阻止鹰蛋壳变厚。

8·Tech multinationals' monopolies should be prevented.

我们应该防止高科技跨国公司的垄断。

9·It was this huge fencing that prevented Prickles from finding her way back.

正是这条巨大的围栏阻止了普里克尔斯找到回去的路。

10·The timely action of the firefighters prevented the fire from reaching the Cathedral's bell towers.

消防队员的及时行动阻止了大火蔓延到大教堂的钟楼。

阻止

1·A nasty incident was prevented by the timely arrival of the police.

警察的及时到来阻止了一次严重事故。《牛津词典》

2·He finally snapped when she prevented their children from visiting him one weekend.

当她阻止孩子们在一周末来探望他时，他终于失控发怒了。《柯林斯英汉双解大词典》

3·DDT prevented eagle eggshells from thickening.

DDT 会阻止鹰蛋壳变厚。

4·It was this huge fencing that prevented Prickles from finding her way back.

正是这条巨大的围栏阻止了普里克尔斯找到回去的路。

5·The timely action of the firefighters prevented the fire from reaching the Cathedral's bell towers.

消防队员的及时行动阻止了大火蔓延到大教堂的钟楼。

避免

1·With these developments, schools can expect that at least the most serious kinds of bullying can largely be prevented.

有了这些进展，学校就可以预计，至少可以最大程度地避免恃强凌弱的行为中最严重的那几种。

2·Not all casualties can necessarily be prevented but by coordinating across local, state, and even national borders, officials hope that the worst-case scenario can be averted.

并不是所有的伤亡都可以避免，但通过各地方、各州、以及国家间的协调，官员们希望可以避免最坏的情况。

3·On the other hand, consumers should bear responsibility for their actions when they could have easily prevented the damage.

另一方面，当消费者本可以轻易避免损害的时候，他们应该为自己的行为负责。

4·Up to two thirds of newborn deaths could be prevented if skilled health workers perform effective health measures at birth and during the first week of life.

如果能在分娩时以及生命第一周中由熟练的卫生工作者提供有效的卫生措施，可能避免近三分之二的新生儿死亡。

5·But such disaster can be prevented if consumers simply refuse to purchase products that are made with CCCs copper until the company abandons its mining plans.

但如果消费者简单地拒绝购买用CCC所生产的铜而制造的产品，直到CCC放弃它的采矿计划就可以避免这种灾害。

妨碍了

1·It was really the British who, by digging their heels in, prevented any last-minute deal.

正是英国人，因其固执己见，妨碍了最后一刻交易的达成。《柯林斯英汉双解大词典》

2·Something was obviously very wrong here: it wasn't that people didn't know what they wanted, but rather that cynicism, or resignation, prevented them from acting.

这儿明显除了什么大问题：并不是说人民不知道自己想要什么，而是说这种犬儒主义，或者说听之任之的态度，妨碍了他们做出行动。

3·Although his illness had prevented him from studying, he managed to pass the exam.

尽管病情妨碍了他学习，但他还是通过了考试。

被阻止

1·Her role as a women's rights activist in Iran has prevented her from returning home.

在伊朗作为一名妇女权利活动家角色的她已经被阻止回家。

阻挡了

1·The thick walls prevented penetration by debris from the hurricane.

一堵堵厚墙阻挡了飓风带来的碎片的穿透。《柯林斯英汉双解大词典》

(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