“月有阴晴圆缺”,海有潮涨潮落。 海边的人们,都知道大海的习性,海水一会儿涨,一会儿落,会按点而来,到点而归,天天如此,月月如此,由于它涨落守时,“严”而有信,人们把潮汐又称之为“潮信”。唐朝诗人李益就曾有诗赞道:“早知潮有信,嫁与弄潮儿!” “There is a full moon,” the sea tide ebb and flow. People at the seaside all know the habit of the sea. The sea water rises for a while and then falls for a while. It will come according to the point. Every day, moon and moon are the same. As it fluctuates and punctures, it is “strict” and credible. People The tide also known as “tide letter.” Tang Dynasty poet Li Yi had poetry praise: “early tide have a letter, marry and get the tides!”