基本解释adj.可拉长的同根派生 英汉例句a tractile metal. 可延展的金属tractile fiber 牵引丝tractile fibre 牵引丝词组短语短语tractile fibre 牵引丝tractile fiber 牵引丝英英字典柯林斯英英字典 capable of being drawn out ductile