Definition
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day
A day is a unit of time equal to 24 hours, representing the period during which the Earth completes one rotation on its axis.
一天是一个时间单位,等于24小时,代表地球完成一次自转的时间。
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I have a meeting scheduled for tomorrow during the day.
我明天白天有一个会议安排。
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The longest day of the year is usually around June 21st.
一年中最长的一天通常是在6月21日左右。
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She enjoys reading a book every day before going to bed.
她喜欢每天睡前读一本书。