名词
中文翻译：白天和黑夜同义词
同义词：
['day and night', 'day and night']
例句：
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1. We spent the whole day and night working on the project.
我们整日整夜都在这个项目上工作。
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2. The scientist studied the stars for days and nights.
这位科学家研究星星已经好几天几夜了。
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3. He was so tired that he fell asleep during the day and night.
他太累了，以至于白天黑夜都在睡觉。