within [wɪˈðɪn]

以下由轻松背单词网站提供

n.内部，里头；adv.在内部，在内心里；prep.在…之内

inside or not further than an area or period of time

The work must be done within the given time. 这个工作必须在规定的时间内完成。
Within two weeks, she gained five pounds in weight. 两周内她的体重增加了5磅。