◎ sag是什么意思 vi. 下垂, 倾斜, 萎靡, 萧条, 变得乏味vt. 使下垂n. 下垂, 倾斜, 萧条[计] 系统分析组, 语法分析生成程序, 电压下降 n. a shape that sagsv. droop, sink, or settle from or as if from pressure or loss of tautnessv. cause to sag sag的用法和例句: 1....