Seromucoid
血清类粘蛋白
🗣️ 情景例句
So, are there any major cultural differences between our two nations?
我们两国间有什么大的文化差异吗？
He has a ring.
他有一只戒指。
It's rude to stare at other people.
盯着别人看是不礼貌的。