Leucokeratosis
粘膜白斑病
🗣️ 情景例句
I'm leaving on Northwest flight 102 on Sunday the thirteenth.
我在星期天、也就是十三号乘坐西北航空的102航班离开。
A hasty man is seldom out of trouble.
性急难免出岔子。
Sorry. I'm free every day except today.
对不起。我每天都有空，唯独今天没空。