Kadmoselite
镉硒矿
🗣️ 情景例句
He knows everything about the production schedule,
他知道生产进度的一切情况，
He tries to button his own shirt,but he can't do it.
他试着扣好他的自己的衬衫，但是他不能做到。
what would civilization be like without its benefits?
如果不受其惠，文明将会是个什么样子呢？