Backing pump
[化] 前级泵
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
pump
[pʌmp]
n. 抽水机;打气筒;泵;轻软舞鞋;
v. 用泵输送 ;涌出;急速摇晃;盘问;
🗣️ 情景例句
He's upset over the fact that he wasn't promoted this year.
他对今年没有升迁感到恼怒。
Britain is behind Japan in developing modern technology.
在发展现代技术方面，英国落后于日本。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？