Flowmeters
na. 流量计; 流速计
🗣️ 情景例句
Is he still in his office?
他还在办公室吗？
It is more pain to do nothing than something.
什么都不做要比做一点更不好受。
No, thanks. Help yourselves to the cakes.
不必，谢谢。请随便吃些糕点吧。