食道,“上接咽,下通胃”之管道也。人的食道有多长?这应该是由人体解剖学家回答的问题,我不敢妄说。不知道个体的食道有多长,能知道群体的食道有多长吗?根据“整体等于局部之和”的公理,不知道个体的长度,怕也是很难知道群体的食道 Esophagus, “on the swallow, under the stomach,” the pipeline also. How long is the human esophagus? This should be answered by the human anatomy, I can not jump to that. Do not know how long the individual’s esophagus, can know how long the group’s esophagus? According to “the whole is equal to the sum of the local” axioms, do not know the length of the individual, fear is difficult to know the group’s esophagus