相关单词近义词 laborious 艰苦的, slow 慢的, inefficient 无效率的, long 长的, onerous 繁重的, arduous 费力的临近词time, time drag相似词time warp, time zone, time's a great healer idiom, time-and-motion study, time-honoured, time-lapse, time-poor, time-release, 返回 time-consuming