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分秒必争
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数秒
miǎo zhēn
秒针
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读秒
miǎo bǎi
秒摆
miǎo mò
秒末
zhū miǎo
铢秒
miǎo hū
秒忽
miǎo biǎo
秒表
rùn miǎo
闰秒
fēn miǎo
分秒
