Sitzmarks
是一种胃肠道造影剂（不透射线的小环）
🗣️ 情景例句
No, we didn't leave anything in the room.
不是， 我们没有弄丢任何东西在房间里 。
Sickness is everyman's master.
英雄只怕病来磨。
I have some difficulty in pronouncing some of the words in English.
我有些英语单词发音不好。