柯林斯詞典daylight saving time (also daylight savings) 1. N-UNCOUNT Daylight saving time is a period of time in the summer when the clocks are set one hour forward, so that people can have extra light in the evening. 夏令時(shí)間[美國(guó)英語] 返回 daylight saving time劍橋詞典the time set usually one hour later in summer so that there is a longer period of daylight in the evening 夏令時(shí) 返回 daylight saving time