一、详细释义:
v.
阻止,妨碍 [I,T]
例句:
This discrepancy will prevent me from obtaining a visa.
因为这一差错,我将得不到签证。
例句:
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。
预防,防止 [I,T]
例句:
The solution then is to prevent the country from becoming a net debtor in the first place.
解决这个问题,首先是要防止一个国家成为净债务国。
例句:
These methods prevent pregnancy.
这些方法能防止怀孕。
二、词义辨析:
block,bar,hinder,obstruct,prevent,hamper
这些动词均含有“阻止、阻塞”之意。block语气强烈,指有效堵住了通道,使人或物无法通过。bar含义与block很接近,指阻塞通道或禁止出入,但有对暗示不用障碍物的阻止或禁止。hinder语气较轻,多指阻碍、拖延人或事,强调使进展速度缓慢下来。obstruct正式用词,语气强,多指以干扰或设置障碍的方式阻碍交通,使不能自由畅通。prevent含义广泛,指采取预防措施或设置障碍去阻止某人或某事。hamper侧重因受到约束或阻碍而造成的行动困难。
三、参考例句:
These methods prevent pregnancy.
这些方法能防止怀孕。
These methods prevent pregnancy.
这些方法能防止怀孕。
This will prevent leaning back.
这将避免身体向后地倾斜。
The condom helps prevent pregnancy.
避孕套是避孕措施之一。
Vitamin C is supposed to prevent colds.
维他命C被认为能预防感冒。
They held their breath to prevent exposure.
他们屏住呼吸以防暴露。
Crop rotation helps prevent soil erosion.
农作物轮作有助于防止水土流失。
These rules are intended to prevent accidents.
这些规则旨在防止事故发生。
Atmospheric conditions often prevent observation of stars.
大气的情况常使人们无法观察星星。
Nobody can prevent our getting married.
谁也阻止不了我们结婚。