Silice
二氧化硅
🗣️ 情景例句
who used to run the drugstore in town.
他过去在镇上经营药房。
Did you give it to him yourself?
你自己亲自交给他吗？
She is a workaholic. She always regards work as the most important thing in the world.
她是个工作狂。她觉得工作是世上最重要的事。