Clausthalite
[化] 硒铅矿
🗣️ 情景例句
OK.
好的。
First of all, I will outline the characteristics of our product.
首先我将简略说明我们商品的特性。
Such a loss of dignity and descent into childish behaviour on the part of the adults deeply shocks the adolescents,
这种有失身份和孩子气的作法使青春期的孩子大为震惊，