Ribonucleotidase
核(糖核)苷酸酶
🗣️ 情景例句
When is check-out time?
什么时候必须结帐和离开宾馆？
My brother wants to learn how to swim.
我的兄弟要去学游泳。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。