Tachometers
(tachometer 的复数) n. 转速计, 流速计\\n[医] 血流速度计
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
Who called a while ago?
刚才谁在打电话？
Is this Mr. Jones?
是琼斯先生吗？