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Therefore it should have a smoothly sweeping second hand ticking at 6 beats per second.
因此它应该有一秒6振,平滑运转的秒针。
youdao
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A ladybug in flight beats its wings up to 85 times per second.
瓢虫飞行时每秒钟扇动翅膀85次。
youdao
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A ladybug in flight beats its wings up to 85 times per second.
瓢虫飞行时每秒钟扇动翅膀85次。
youdao