劍橋詞典used after a number from one to twelve to say the time when it is exactly that hour (用于數(shù)字1至12后表示整點(diǎn))…點(diǎn)鐘 It's two o'clock. 兩點(diǎn)鐘了。 He called me at four o'clock in the morning . 他凌晨4點(diǎn)打電話給我。 例句 Make sure you're there by five o'clock.I always get up at six o'clock. 返回 o'clock