Aerodynamic diameter
[化] 空气动力直径
🧩 词语组成解析
a. 空气动力学的
🗣️ 情景例句
When did you come here?
是什么时候来这儿的？
I meet the boy whose aunt is a nurse.
我遇到那个男孩的姑妈是护士。
I suddenly felt very worried, but could not say anything.
我突然非常着急起来，但却什么也说不出来。