Trechmannite
轻硫砷银矿
🗣️ 情景例句
Is he a client?
他是顾客吗？
Happiness takes no account of time.
幸福不觉光阴过。
Two of his assistants had been working busily since eight o'clock and had only just finished.
他手下两名店员从早上8点就开始忙碌，这时刚刚布置完毕。