levels at短语⁴⁹⁶⁸³ 基本例句 v.描准 In storage volume, we are currently well below the levels at this time last yearalthough those were record levels. 这种情况下，美国目前的天然气库存明显低于上年同期创下的历史最高水平； cei.lib.whu.edu.cn There are two levels at which the distinction can be made. 差别存在于两个级别。 ibm