Ribonucleic
a. 核醣核酸
??? 情景例句
Or religion unless you know them very well.
除非你和對方很熟。
What's your nationality?Are you a French?
你的國籍是什么？你是法國人？
The doctor said he could do nothing to help him.
醫(yī)生說他對此無能為力。