The resulting Date object will have its time portion set to midnight, of course.
(当然，产生的Date对象将把它自己的时间部分设置为午夜时刻)。
To begin with , you will need to commit a portion of your time to studying.
首先，你将需要把你的一部分时间投入到学习上。
A point or portion of time at which something is ended; a completion or conclusion.
完结某事结束的时间点或时间段；
A point or portion of time at which something is ended; a completion or conclusion.
完结某事结束的时间点或时间段；
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