Gaswasher
气体净化器
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
The student felt very shy as he stood in front of the class.
那个学生站在大家的跟前时，感到非常难为情。
What's the matter, Carol?
怎么了，卡罗尔？