Particle density
[化] 颗粒密度
🧩 词语组成解析
🗣️ 情景例句
Yes, a double room, please. What?
对， 双人房间 麻烦你。什么？
I can't imagine that anyone cares about what I do.
我想不出谁会关心我的所做所为。
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。