Molecule(or particle) number concentration
[化] 分子(或粒子)数浓度
🧩 词语组成解析
🗣️ 情景例句
He's so funny.
他很逗趣。
It isn't much.
那是微不足道的。
That is perhaps why sculpture has been described as the most difficult of all arts;
雕塑被说成是所有艺术中最难的艺术，可能就是这个道理。