Sitzmarks
是一种胃肠道造影剂（不透射线的小环）
🗣️ 情景例句
No, thank you.
不， 谢谢 。
Do you speak English?
你会说英语吗？
We were so excited, my brother and I, that we did not get to sleep until very late.
我们太激动，以至于我和我弟到很晚才睡得着。