柯林斯词典tubule /ˈtjuːbjuːl/ 1. N any small tubular structure, esp one in an animal, as in the kidney, testis, etc (动物肾脏、睾丸等内的)小管结构 返回 tubule剑桥词典a very small tube that forms part of a plant or animal （植物或动物的）小管 返回 tubule