Udc
abbr. 国际十进位分类（universal decimal classification）
🗣️ 情景例句
Richard, if you go out
Richard，假如你去
Thank you for giving me an opportunity to speak about myself at this special occasion.
谢谢大家给我机会在这样一个特别的场合介绍我自己。
He spent most of his life gathering money.
他一生大部分时间用来积聚钱财。