重点讲解：
1. at first 最初；起初；开始时；
例句：She was nervous at first but soon composed herself.
她一开始有些紧张,但很快就镇定下来了k0E#9yC&98。
2. be famous for 以……闻名；
例句：The city is famous for its silk.
该市以出产丝绸而闻名於世WTLamjtRjt8TYm~+l。
3. take off 脱下，脱掉(衣物)；
例句：The doctor gestured me to take off my coat.
医生做手势要我脱去外套pD3ajqqI*R#。
4. run out 用完；耗尽；
例句：Our time is running out.
我们剩下的时间不多了sKtW*yG.hf=q%I5)jJn&。