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重点讲解：
1. in contact with 和……联系；接触；
Who are you in contact with?
你在和谁联系。
2. come back 回来；恢复；
I begged him to come back to England with me.
我恳求他和我一起回英格兰。
3. in need 需要帮助的；在困难时；
I am in need of a loan of a bike for a few weeks.
我需要借辆自行车用几个星期。
4. take a risk 冒险；承担风险；
You take a risk by investing it all in one area.
你将所有的积蓄投资一处是很冒险的。
