Uasb
abbr. upflow anaerobic sludge blanket 升流式厌氧污泥床
🗣️ 情景例句
I'm always prepared to listen.
我总是准备听的。
Danger is next neighbour to security.
危险是安全的近邻。
and a very firm hand must be employed in the early stages.
因此开始阶段需要有一位强有力的老手。