Dida
abbr. differential in-deptb analysis 差值分析
🗣️ 情景例句
But we'd like to find out
但我们想知道
Youth is a blunder; manhood a struggle, old age a regret.
青年冒失莽撞；成年发奋图强；老年遗憾懊丧。
Are there any birds in the picture?
画里面有鸟吗？