Microdensitometry
微密度测定
🗣️ 情景例句
I ofter go shopping during National Day holiday.
我经常是在国庆节购物。
Constant dropping wears the stone.
滴水不绝可穿石。
He's a very nice person.We'll all miss him.
他是个非常好的人，我们大学都会想念他的。