Uasb
abbr. upflow anaerobic sludge blanket 升流式厌氧污泥床
🗣️ 情景例句
Relax, Harry.
不要紧张 ，Harry。
Would you please tell us the price of these electric heaters so as to help us make the decision.
能否告知这些电热器的价格，以便我们作出决定。
What was wrong with Jim ? Did he hurt himself?
吉姆怎么啦？他伤着自己啦？