相关单词同义词testing, intractable, 近义词 complicated 复杂难懂的, tough 强硬的, problematic 问题的, tricky 棘手的, difficult 困难的, awkward 尴尬的, complex 复杂的, thorny 多刺的, hard 硬的, baffling 令人困惑的, convoluted 旋绕的, tortuous 弯曲的, knobbed 有节的, gnarled 树木多瘤节的...Byzantine, 拜占庭的, involved 涉及的, snarled 纠缠不清的, problematical 成问题的, knotted 打结的, gnarly 扭曲的, snarly 善于嚣叫的, tangled 纠缠的, elusive 难懂的临近词know, knot, knotty log, knotty ore, knotty wood, knotty pine, knotty tear, knotty point, knotty coding, knotty gneiss, knotty trouble, knotty tearing相似词knockout, knockout drops, knoll, knot, know, know all the answers idiom, know all there is to know about sth idiom, know best idiom, 返回 knotty