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vi.妨碍，阻止
vt.预防，防止；阻止
1、paravent───挡风屏障
2、preventer───n.妨碍物；妨碍者；预防物
3、prevene───私有的
4、present───adj.现在的；出席的；（事物）存在的；正在考虑的；现在时（态）的；n.礼物；现在，目前；（动词）现在式；（举枪的）瞄准；v.颁发；赠送；提出；展现；使发生；描述；出现；主持（节目）；上演；介绍；出席；表达；提交（支票或账单）；致谢；（教堂）向主教推荐已被委任的牧师就任；向法院正式提交；举枪瞄准 ；（疾病）症状显露
5、prevented───v.阻止；避免；被阻止（prevent的过去式，过去分词）
6、prevened───防止
7、precent───v.领唱（赞美诗或祷文）
8、prevalent───adj.流行的；普遍的，广传的
9、prevents───v.阻止（prevent的第三人称单数）；预防
1、Just to prevent all the automatic responses if you want me to actually look at your offer include Drift in the beginning of your reply.───只是为了避免所有的自动回复，如果你想让我看看你的报价实际上包括在你的答复开始漂移。
2、Following the use of vasoconstrictors, endoscopic therapy is often used to arrest the bleeding varices and prevent early rebleeding.───使用血管收缩剂以后，内视镜疗法常被用来止血及预防早期再出血。
3、We make it a dollar cheaper to ship the sweaters, and then increase the tariff by two dollars to prevent the sweaters from being shipped.───我们降低羊毛衫运输成本1美元，却又增加了2美元的关税而阻止了它的运输。
4、We are taking steps to prevent pollution.───我们正在采取措施防止污染。
5、Clinical help may also prevent the child from seeking out friends, lovers, and mentors who share her mother's difficult traits.───临床医师帮助也可能会防止孩子向朋友，爱人，和导师诉苦，分享她强硬母亲的故事。
6、But the rules prohibit export subsidies, to prevent governments from trying to help their companies gain in world markets.───但是条约禁止出口补贴，以防止政府帮助该国公司在国际市场上获利。
7、These methods prevent pregnancy.───这些方法预防怀孕。
8、Numerous deaths of the two famous men did not prevent them from being involved in many spectaculars exploits, including the Long March.───这两个著名人物多次遭难，可并不妨碍他们参与许多次惊人壮举，其中包括长征。
9、Regular exercise helps prevent weight gain.───经常锻炼有助于防止体重增加。
1、Cover the entire device to prevent water penetration.
2、We should prevent the occurrence of physical violence.
3、Props were used to prevent the roof collapsing.
4、These methods prevent pregnancy.
5、We hope to prevent anything unpleasant from happening.
6、He who can suppress a moment's anger may prevent a day of sorrow.
7、Learn from the mistakes of others and prevent your own.
8、The wood is treated with preservative to prevent decay.
9、The rules are intended to prevent accidents.