level可数 level的复数形式是levels
level：n. (某时某情况下存在的)数量，程度，浓度标准水平质量品级层次级别 扩展资料
Water will always find its own level.
水总会自行流平。
The conflict has now reached a new level of intensity.
冲突现在已经达到了新的激烈程度。
You need three A levels to get onto this university course.
你要参加这个大学教程，就需要通过三科高级证书考试。
