Ureidohydantoin
尿囊素
🗣️ 情景例句
Don't worry, be happy.
别担心，开心点。
The great fish ear up the small.
弱肉强食。
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。