Polymer pump
[化] 聚合泵
🧩 词语组成解析
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
the first settlers in America.
他们是第一批来美国定居的移民。
Why did you go there?
你为什么去那儿？
Some of the things were hundreds of years old.
展出的一些东西已有数百年的历史了。