相关单词同義詞tough, trying, rough, 近義詞 arduous 費力的, difficult 睏難的, strenuous 奮發的, painful 痛苦的, hard 硬的, exacting 嚴格的, complicated 複襍難懂的, tiresome 令人厭倦的, exhausting 疲倦的, backbreaking 非常辛苦的, painstaking 辛苦的, protracted 延長的, lengthy 冗長的, tough 強硬的, punishing 艱難持久的, operose 費力的, grueling 折磨人的, toilsome 費力的, heavy 大(量)的, gruelling 繁重而累人的...臨近詞labour, laboratory, laboriously, laboriousness, laBorious Bees, laBorious style, laborious specialty, laborious test method, Laborious study or meditation.相似詞labor-saving, laboratory, labored, laborer, labour, labour camp, Labour Day, labour force, 返回 laborious