late 13c., agent noun from clap (v.). Meaning "tongue of a bell" is from late 14c. Old English had clipur. Meaning "hinged board snapped in front of a camera at the start of filming to synchronize picture and sound" is from 1940.
实用例句
1. With time elapsing, the flaps collapse up on his clapper's lap.
随着时间流逝, 袋盖在拍手者的膝上堆叠起来.
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2. With time elapsing, the flaps collapse on the clapper's lap.
随着时间流逝, 副翼在拍手者的膝盖上堆叠起来.
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3. Clapper talk between two people is one type of clapper talk.
对口快板儿是快板的一种形式,由两个人共同表演.
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4. You installed a clapper? - No , but catchy jingle, isn't it?
你装了声控装置? - 没有, 不过那首广告曲很好玩对 吧 ?
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5. With time elapsing, the flaps collapse up on clapper's lap.