相關(guān)單詞同義詞hard, rapid, bold, struggling, 近義詞 hard 硬的, laborious 艱苦的, strenuous 奮發(fā)的, difficult 睏難的, formidable 強大的, exacting 嚴(yán)格的, tiresome 令人厭倦的, painful 痛苦的, grueling 折磨人的, gruelling 繁重而累人的..., operose 費力的, toilsome 費力的, demanding 要求多的, onerous 繁重的, tiring 令人疲倦的, taxing 費力的, straining 拉緊, punishing 艱難持久的, heavy 大(量)的, backbreaking 非常辛苦的臨近詞are, ardour, arduously, arduousness, arduous work, arduous task, arduous paths, arduous adj., arduous journey, arduous efforts, arduous struggle相似詞arcuate, arcus, ardent, ardour, are, are my eyes deceiving me? idiom, area, area code, 返回 arduous