Metering pump
[化] 计量泵
🧩 词语组成解析
n. 测光模式；计量, 测量
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
It's nice seeing you.
非常高兴见到你。
A good beginning is half done.
良好的开端，就是成功了一半。
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。