重点讲解：
1. at first 最初；起初；开始时；
The children were shy at first, but soon lost their inhibitions.
孩子们起初很羞涩，但很快就放开了Cf*HSHlV&c9G*CQ3A。
2. be used to sth./doing sth. 习惯于；
It's very different to what I'm used to.
这与我所习惯的大不相同MB8oZ#sT_XkmzXBnl。
3. pull out （使）撤退；（使）退出；
The foreign firm decided to pull out because of strikes.
由于工人不断罢工，这家外国公司决定撤走^G^RT-eGw^I。
4. in charge 主管；全面负责；统领；
If I was in charge, I'd do things differently.
假若由我负责，我不会这样办事的CbpJA5t@XlF,I=V1j;a。