1. straw hat 草帽
例句：
She likes to wear her straw hat.
她喜欢戴草帽。

2. of course 当然，一定
例句：
I have read about you in the newspapers of course.
我当然在各报纸读过关于你的报道。

3. an arm and leg一大笔钱

My wife bought a mink coat that cost an arm and a leg.
内人买了一件昂贵的貂皮大衣，似乎不值得。
Eating in this restaurant will cost you an arm and a leg. You'llhave to pay tens of yuan for even a soup of cabbage and beancurd
这个饭馆太宰人了。一个白豆腐汤也得要上几十元。