Tachometry
n. [测]转速测定(法),流速测定(法)
🗣️ 情景例句
Have you discussed it with your parents?
你和父母商量过了吗？
John and I are old friends.
我和约翰是老朋友了。
The eraser goes from one student to another first one way, then another.
橡皮擦从一个学生传给另一个学生－先从这个方向传过去，然后返回来。