Dida
abbr. differential in-deptb analysis 差值分析
🗣️ 情景例句
are important for the sales of your book.
对于你这本书的销售很重要。
Is this a recorded program?
这是不是录音节目？
He gets into the lift. It takes him down to the first floor.
他进入电梯。他乘电梯下到1楼。