Protaminase
鱼精蛋白酶, 羧肽酶B
🗣️ 情景例句
Would you describe yourself as outgoing or more reserved?
你认为你是个外向的人还是内向的人？
Thank you for directions.
感谢你为我指路。
Oh, hello. Could I speak to Jim, please?
喂，可以让吉姆接个电话吗？