Rav
abbr. 瑞星杀毒软件；右心房容积（Right Atrial Volume）
🗣️ 情景例句
How do you stay so young-looking?
你怎样保持如此年轻的？
I have no idea.
我不知道。
the writer comes to discern things in his material which were not consciously in his mind when he began.
会领悟到素材中很多东西是他刚动笔时所未意识到的。