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
Susan, would you like the crab salad?
Susan，要不要蟹肉沙拉？
Why didn't you come?
为什么你不来？
His bike hit the bag of rice and he fell off.
他的车撞到大米上，他摔了下来。