Preoperculum
[医] 前盖
🗣️ 情景例句
I always neglect my health.
我老是忽视我的健康。
A disease known is half cured.
病情确诊断，治病好一半。
But I didn't see much during the flight because there was too much cloud.
但我在飞行途中并没有看到什么东西，因为云层很厚。