Kerectasis
[醫] 角膜突出, 角膜擴張
??? 情景例句
Excuse me.
失陪。
I'm too young.
我太年輕。
But I'm worried about his Chinese.He may fall behind the other students when he comes back.
但我擔心他的中文。等他回來后，他可能會落到其他同學后面。