Caseidin
n. [生化]酪蛋白免疫素
🗣️ 情景例句
I have been a poor student of foreign languages.
外语就学得不好。
Competition between bidders for this valuable painting has been keen.
拍卖时各出价对这幅名画竞争很激烈。
I must finish that first. But I think I can be free at six. May I come then?
00可能有空。我那时来可以吗？