吃吃地笑

• titter
• giggle

例句

1. 她正对着一男生写给她的信吃吃地笑着。
   She was giggling at a letter from a boy.
2. 她看到什麽都吃吃地笑。
   She giggles at everything.
3. 听众很有礼貌地吃吃地笑了笑。
   The audience tittered politely.
4. 在我现在看来，他那时似乎在叹气，而我吃吃地笑是在隐藏我的尴尬。
   It seems to me now that he sighed and that I tittered to hide my embarrassment.