剑桥词典used when referring to a time in the afternoon or evening or at night 下午 We'll be arriving at about 4.30 p.m. 我们下午4：30左右到。 The 6 p.m. train is usually very crowded . 下午6点的火车通常很挤。 比较a.m. 例句 The moon will be totally eclipsed at 12.10 p.m.The exact time of the accident was 2.43 pm. 返回 p.m.