Serpin
丝氨酸蛋白酶抑制蛋白
🗣️ 情景例句
Freezing, isn't it?
好冷啊！
Can you help me out? I'm trying to find a post office.
你能帮我个忙吗？我想找个邮局。
But Wu Dong ran fastest of all.
但吴东在三人中跑得最快。