Tryptose
胰蛋白
🗣️ 情景例句
What I really want is the chance to learn some advanced methods of management.
我真正希望的是有机会学到一些先进的管理方法。
Do you like skating?
你喜欢溜冰？
Ken gave up smoking two years ago. He'd been smoking for thirty years.
两年前肯戒了烟，之前他抽了三十年烟。