"I beg your pardon?" she giggled.

“对不起，你说什么？”她咯咯地笑着问。

And then, unaccountably, she giggled.

然后，莫名其妙地，她咯咯笑了。

They giggled nervously as they waited for their turn.

他们排队等候时紧张地傻笑着。

This time it giggled as it spoke, "Stop it!"

这一次，它一边说一边咯咯地笑：“住手！”

The girls giggled at the joke.

女孩子们让这笑话逗得咯咯笑。