Oxygenerator
制氧机
🗣️ 情景例句
He is as poor as a church mouse.
他一贫如洗。
I enjoyed the movie very much. I wish I had read the book from which it was made.
电影不错，我希望我读过原著。[wish + 主语 = 过去完成时 = 愿望之事在wish以前发生。]
Who's calling?
是哪一位？