相关单词近义词 inertia 惯性, boredom 无聊, lethargy 昏睡, slowness 缓慢, listlessness 倦怠, sloth 树獭, laziness 懒惰, phlegm 痰, languor 怠惰, flatness 平坦, lassitude 无力临近词sluggish, sluggish traffic, sluggish flowing, sluggish control, sluggish rebound, sluggish turnover, sluggish recession, sluggish lubricant, sluggishness of qi, sluggish inversion, sluggish flow ratio 返回 sluggishness