Zonolysin
糜蛋白酶
🗣️ 情景例句
Take care, and don't be a stranger.
保重，以后别见外。
My brother is two years younger than I am.
我的兄弟比我年轻2年。
I left a suitcase on the train to London the other day.
几天前我把一只手提箱忘在开往伦敦的火车上了。