Acidifiers
(acidifier 的复数) n.成酸剂
🗣️ 情景例句
I'm your mother.
我是你母亲。
I don't know for sure.
我不能肯定。
Yes, Miss Zhao. answered the students. Now, who is on duty today?
“好的，赵小姐，”同学们回答。“今天谁值日？”