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重点讲解：
1. grow up 长大成人；
She grew up in Tokyo.
她在东京长大。
2. on the line 岌岌可危；冒极大的险；
He wouldn't put his career on the line to help a friend.
他不会为了帮助朋友而让自己的事业受到威胁。
3. at times 有时；间或；
The debate was highly emotional at times.
辩论有时变得异常情绪化。
4. get back to 恢复（原状）；回到；
I didn't get back to Brussels until after my demob.
我在复员之后才回到了布鲁塞尔。
n. 冠军，优胜者，拥护者，勇士
vt. 保卫
