Diff n
[计] 纵坐标差
🧩 词语组成解析
abbr. 扩散器（diffuser）；[数]微分；差速器（differential）
🗣️ 情景例句
Hey, do you work out?
嘿，你锻炼吗？
The president must have the approval of Congress to declare war.
总统若要宣战，必须获得国会的承认。
Oh, sweaters.
羊毛衫。