Tachyol
[化] 氟化银
🗣️ 情景例句
I am in the 7th grade.
我是七年级。
He is explaining the details of his idea.
他在详细说明这个构想。
My teacher's name is Miss Gao. At school I have a friend. His name is Li Lei.
我的老师是高小姐，我在学校里有一个朋友。他叫李磊。