Solabar
多硫化钡
🗣️ 情景例句
I'd like you to meet Audrey and her mother, Mrs. Cooper.
我来向你介绍， Audrey和她母亲 Cooper太太。
I would like to develop this film.
我要晒印这底片。
and who drew his conclusions fearlessly.
并大胆地得出自己的结论。