Owls sleep by day and work at night.
猫头鹰白天睡觉晚上工作。
There will be occasional showers during the day.
白天将偶有阵雨。
He is seldom at home during the day.
他白天很少在家。
You can see stars by night, but not by day.
你在夜晚可以看到星星，白天却看不到。
He has been working all day.
他已工作了一整天。
The eggs began to decompose after a day in the sun.
鸡蛋在太阳下放了一天后开始变坏。
The milkman comes every other day.
送牛奶的人每隔一天来一次。
He is the man of the day.
他是时下的风云人物。