Eukeratin
优角蛋白
🗣️ 情景例句
These knives are guaranteed never to go blunt.
这些刀保证不会变钝。
It's hot this afternoon.
今天下午很热。
All the other boys are Chinese. All of the Chinese students are Young Pioneers.
其余的男孩都是中国人。所有的中国学生都是少先队员。