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
What about your arms? Lift your arms up like this.
你胳膊怎么样?手抬起来， 像这样。
Please come in.
请进。
I'm allowed to change the colour of my hair, she said angrily.
我改变自己的发色是允许的，"她愤怒地说。