Seligmannite
硫砷铅铜矿
🗣️ 情景例句
Today, trade imbalance between the United States and our country is becoming worse.
当前美国与我国间的贸易不平衡问题正日益恶化。
Please try to be congenial and welcome the guests with a small.
请用笑脸愉快地迎接客人吧。
I can't follow you.
我不懂你说的。