柯林斯詞典tubule /?tju?bju?l/ 1. N any small tubular structure, esp one in an animal, as in the kidney, testis, etc (動物腎臟、睪丸等內的)小管結構 返回 tubule劍橋詞典a very small tube that forms part of a plant or animal （植物或動物的）小管 返回 tubule