Tachometry
n. [測]轉(zhuǎn)速測定(法),流速測定(法)
??? 情景例句
Certainly. Do you have any identification?
當然可以。你有任何證明文件嗎？
Where can you pick up your suitcase?
你在哪里取你的手提箱呢？
Here you are, Dad.
爸爸，給你。