Polymolybdate
多钼酸盐
🗣️ 情景例句
The old couple has already been married for fifty years.
那对老夫妻结婚已经 50 年了。
Meat is almost more precious than money!
肉贵得买不起了。
Do you call that printing?
你们把那种方法叫做印刷术吗？