Hras
[医][=high-rate activated sludge waste treatment]高速活性污泥废水处理
🗣️ 情景例句
at the Museum of Natural History.
在自然历史博物馆。
OFF. It gets dark.
断开开关，它就会熄灭。
If they can each be trusted to take such responsibilities.
如果企业的每个人都信得过，人人都认真负责，