水浅的地方人们可以依据步伐的大小,摆放石头而过。说文“砅”字,屡石渡水也。从水从石,《诗》曰:“深则砅”。段玉裁《说文解字注》(以下简称为段注),砅,屡石渡水也,乃水之至浅。会游泳的人可以通过游渡过河。但不是人人都会游泳,而且人们往往会携带东西。因而发明水上交通工具是必然的。一、瓠、匏、筏“葫芦”为葫芦科、葫芦属一种年生的草本植物,《说文解字》中“瓠”即为此种植物的名称。《庄子·逍遥游》“今 Water shallow place people can be based on the size of the pace, placed stones. Said the text ”砅 “ word, repeated stone water too. From the water from the stone, ”poem“ said: ”deep 砅 “. Duan Yu cut ”Shuo Wen Jie Zi Note“ (hereinafter referred to as the paragraph note), 砅, repeated stone water, but also the water to light. Swimmers can swim across the river. But not everyone will swim, and people tend to carry things. Therefore, the invention of water transport is inevitable. First, 瓠, 匏, rafts ”gourd “ for the Cucurbitaceae, gourd is an annual herb, ”Shuowen Jiezi“ in the ”瓠 “ is the name of this plant. ”Zhuangzi Getaway“ ”Today