Udc
abbr. 国际十进位分类（universal decimal classification）
🗣️ 情景例句
What about her new friends?
那她的新朋友呢？
A leader should not dictate to his followers.
领导者并不是向部下下达命令便了事的。
Yes. You should never keep fish in a small round bowl.
错不了。你绝不能把鱼养在一个小圆缸里。