tube 名词复数:tubes 过去式:tubed 过去分词:tubed 现在进行时:tubing 词形变化: 动词过去式: tubed | 动词过去分词: tubed | 动词现在分词: tubing | 动词第三人称单数: tubes | 词义辨析: 同义: n.管; 筒 pipe hose reed 同义参见: railway canal2 television underground1 subway lamp