levels
/ˈlev.əlz/
名词
(与他人相比的)能力,水平,级别
The exam can be taken at three levels.
这种考试分为3个级别。
层,楼层
The library has three levels, with a conference centre at ground level.
这个图书馆分三层,在一层有一个会议中心。
高度
The levels of pollution in the city have reached alarming heights.
这座城市的污染水平已经达到令人震惊的高度。