详细解释:n. 运河, 水道, 管, 沟渠
vt. 开运河
【医】 管, 道
词型变化：
动词过去式:canalled,canaled过去分词:canalled,canaled现在分词:canalling,canaling第三人称单数:canals,canals英语解释：
名词 canal:
(astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusiona bodily passage or tube lined with epithelial cells and conveying a secretion or other substance同义词：duct, epithelial duct, channel