Protaminase
鱼精蛋白酶, 羧肽酶B
🗣️ 情景例句
Do you want to get together and study sometime?
你想和我一起学习吗？
His confidence can be destroyed by a harsh word.
他的信念，只要受到严厉的批评就会崩溃。
He says the Chinese people are very friendly.
他说中国人都很热情。