Word: 昼夜 (zhòuyè) Traditional: 晝夜 昼夜 dictionary entry zhòuyè day and night; period of 24 hours; continuously, without stop Full dictionary entry for 昼夜 Example sentences using 昼夜 2 sentences, showing page 1 of 1. 沙漠里昼夜温差很大。 Shāmò lǐ zhòuyè wēnchà hěn dà. In the desert, the temperature difference between day and night is huge. 这段时间昼夜温差很大。 Zhè duàn shíjiān zhòuyè wēnchà hěn dà. There is a large temperature difference between day and night during this period of time.