Anectasis
原發性肺不張
??? 情景例句
The trouble is
問題是
There is nothing which has not been bitter before being ripe.
事情在成功前沒有不艱苦的。
I don't have any small pads. I only have large one. Do you want a pad?
我沒有小本的信紙，只有大本的。您要一本嗎？