o’clock /əˈklɔk/ …点钟 (of the clock的缩写，只用于正点，不和a.m., p.m.等缩写词连用)：What o’clock is it?现在几点钟? It is one o’clock.现在是1点钟。We left London at ten o’clock.我们10点钟离开伦敦。