Tachometers
(tachometer 的复数) n. 转速计, 流速计\\n[医] 血流速度计
🗣️ 情景例句
You were right and I was wrong. I apologize.
你是对的， 我错了。 我道歉。
You cannot make a silk purse out of a sow's ear.
猪耳朵做不成丝钱包；巧妇难为无米之炊。
What's in it?
里面是什么东西？