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第443句
Some people may be addicted to net-surfing, which impairs their physical and mental health.
译文：有些人可能对上网上瘾了，这不利于他们的身心健康。
点睛：本句中包括一个非限制性定语从句，对所修饰的词作补充说明，主句和从句在意义上是相对独立的。
l decided to buy a birthday present for my mother, who lives alone in the countryside.
我决定给独自住在乡下的母亲买一份生日礼物。
impair意为“损害”。
We deem it the deepest disgrace to impair her interests，dignity or honor.
我们认为，损害国家的利益、尊严或荣誉是最大的耻辱。
句型拓展：
*Addicted to net-surfing impairs their physical and mental health.
上网成瘾不利于他们的身心健康。
*They are addicted to net-surfing,getting their physical and mental health impaired.
他们上网成瘛了，使他们的身心键康都遭到了损害。
n. 耻辱，不名誉
v. 耻辱，使 ... 失
