Density of particle
[医] 微粒密度
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Work hard and play hard, my friend.
工作的时候要拼命干，而娱乐的时候要尽情玩，朋友。
I couldn't wait any longer for you!
我等你等得不耐烦了！
Is it expensive to hire a car?
租车贵不贵？