Keratin
n. 角蛋白\\n[化] 角蛋白
🗣️ 情景例句
Language is her strength, math is her weakness.
语言是她的强项，数学则是她的弱门。
I meet the boy whose aunt is a beautician.
我遇到那个男孩的姑妈是美容师。
Yes, said Miss Yang.they're on that shelf over there.
“有，”杨小姐说，“就在那边的那个书架上。”