Desivac
冰冻干燥法, 冻干法
🗣️ 情景例句
Would you please try to keep quiet at this hour?
这么晚了，你能不能尽量保持安静。
I'm writing to a friend of mine in South American.
我在写信给一个美国南部的朋友。
I quit!
我不干了！