pipe up

vi. 高声说话

例句与用法：

Mary is so shy, and everyone was surprised when she piped up with a complaint at the club meeting.

玛丽一向很怕羞，当她在俱乐部会议上大发牢骚时，大家都很吃惊。

详细释义：

尖声地说

I had to pipe up when they were pushing that crazy idea.

当他们在鼓吹那疯狂的想法时, 我不得不大发议论。

"I don't agree! " someone piped up.

"我不同意! "有人高声说道。