normal level

• 正常能级,正常水平

normal level的用法和样例：

例句

1. The production of their factory was far below the level last year.
   去年他们工厂的产量远远低于正常水平。
2. Two months later, his lymphocyte count shot up to almost normal levels.
   两个月后，他的淋巴细胞数量迅速增加，几乎达到正常水平。