Keratitis
n. 角膜炎\\n[医] 角膜炎
🗣️ 情景例句
I'm having trouble eating.
我吃东西时有困难。
I worked in the garden last night.
我昨晚在花园工作。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。