Ubiquitin
n. 泛激素，泛素（一种存在于大多数真核细胞中的小蛋白）
🗣️ 情景例句
I'd like to introduce you to some of my friends.
我想介绍你认识一些我的朋友。
Come to see me tomorrow if it is convenient to you.
你如果方便的话，明天来看我。
But I must ask my parents first. What time shall I come?
不过我必须先问问父母。我几点钟来呢？