at night

• We had to work at night and in total silence .
  我们必须在夜间干，而且绝对不能发出响声。
• Fireflies give off flashes of light when they fly at night .
  萤火虫夜间飞行时发出闪光。
• The storm blew over at night .
  风暴在夜里停止了。
• It was late at night and he was still working away at his homework .
  他还在做课外作业。
• At night we have great quantities of spare electric power .
  夜间，我们有大量多余的电力。
• I hate noise at night .
  晚上，我不喜欢有喧闹声。
• The sounds were noisy at night when you could not sleep .
  每当夜间睡不着，这声音响得很烦人。
• She slept badly at nights .
  她晚上也睡不好。
• It was presumed that i prayed before i got into bed at night .
  我晚上上床之前当然也要做祷告的。
• I gave it little thought and at night i went to bed peacefully .
  我没有把它挂在心上，晚上安然就寝。