A: Do you know what a clapper is in a bell?
A：你知道钟里的 clapper 是什么吗？

B: Yes, it's the part that strikes the bell to make sound.
B：知道，它是敲击钟体发声的部件。

1) 钟或铃中用来敲击发声的金属或木制部件

2) 电影拍摄中用于同步画面和声音的场记板翻板

3) 某些机械装置中用于撞击发声的部件

4) 比喻中指制造声响或引起注意的物体

1. 钟锤；铃舌

2. 场记板的翻板

3. 敲击发声装置

noun

1. A small piece inside a bell or similar instrument that swings to strike and produce sound; also a part of a clapper board used in filmmaking.

Synonym: striker, hammer