Ion velocity
[机] 离子速度
🧩 词语组成解析
ion
['aiən]
n. <物>离子;
🗣️ 情景例句
Robbie, there's a phone call for you.
Robbie，有你的电话。
I guess he will say something.
我猜他会说什么。
An old watch, by contrast,
然而一只老掉牙的手表，