They sleep by day and hunt by night.
他们白天睡觉，夜晚捕猎。
I see better at night than by day.
我在晚上比在白天看得清楚。
我们的儿子一天一天长大了。
The sun shines by day, and the moon shines by night.
太阳在白天光芒万丈，月亮在夜晚明亮；
Nocturnal animals sleep by day and hunt by night.
夜间活动的动物白天睡觉晚上猎食。
他们在一天天地改进。
The city, drab and dour by day, is transformed at night.
这座城市白天死气沉沉、单调乏味，晚上就完全变了样。
Ground squirrels are normally active by day and sleep at night.
地松鼠一般白天活跃晚上睡觉。
Day by day his condition improved.
他的健康状况一天天好转。
Competition is getting hotter day by day.
竞争日趋白热化。
Engineer by day, Leo learned cooking at night school.
利奥白天是一名工程师，晚上会在夜校学习烹饪。
Those two books were my companions by day, and under my pillow at night.
这两本书白天与我为伴，晚上在枕下与我共眠。
It's getting warmer day by day.
天气越来越暖和了。
Our country is thriving and prospering day by day.
祖国日益繁荣昌盛。
The patient's condition is improving day by day.
病情逐日好转。
The market is becoming brisker day by day.
市场日趋繁荣。
Transportation and communications are becoming easier day by day.
交通日臻便利。
My men grow mutinous day by day;
我的船员一天比一天更想叛变
They built up love day by day.
他们的爱一天天逐步建立。
她一天天的消瘦。
Since then I have never sung by day.
从此，我再也不在白天唱歌了。
My aim is to keep improving day by day.
我的目标是保持每天提高。
Most people work by day and sleep by night.
大多数人在白天工作，夜里睡觉。
Bringing fresh peace and comfort day by day.
每天带来新的安慰和安宁。
Would you like to work by night or by day?
你愿意在晚上还是在白天工作？
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。
They will travel by night as well as by day.
他们将日夜兼程。
That is why, by day, ozone is hard to get rid of.
这就是白天空气中臭氧难于消散的原因。
That is why, by day, ozone is hard to get rid of.
这就是白天空气中臭氧难于消散的原因。
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