pollution level的用法和樣例：
例句
- Pollution levels fall during nightime.
夜晚的污染程度則會(huì )下降。 - Levels of pollution present in the atmosphere are increasing.
大氣中的污染程度正在加深。
pollution level的相關(guān)資料：
臨近單詞
pollution tax
pollution
Pollution permitting system
pollution incident of ships
pollution control technique
pollution emergent accident
pollution of single element
pollution discharge taxation
pollution by nitrogen oxides
pollution monitoring network
pollution control regulation
pollution Tx/Rx isolution
