Particle number density
[化] 平均密度
🧩 词语组成解析
🗣️ 情景例句
Yes, I am.
是的，我是。
We are thinking of expanding into the Chinese market.
我们想把生意扩大到中国市场。
All he knew was that his African ancestor taught his son and grandson the words in his own language for river and guitar.
他所知道的只是非洲祖先用自己的语言教给儿孙们的“江”和“吉他”这两个词。