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题目:海水受日月的引力,在一定的时候发生涨落的现象叫潮.一般地,早潮叫潮,晚潮叫汐.在通常的情况下,船在涨潮时驶进航道,靠近码头;卸货后,在落潮时返回海洋.下面是某港口在某季节每天的时间和水深的关系表:
Topic: Sea water is subject to the gravitational pull of the Sun and the Moon. The phenomenon of fluctuations at a certain time is called the tide. Generally, the tide is called the tide, and the tide yells. Under normal circumstances, the ship sails into the fairway at high tide, near the pier. After unloading, return to the ocean at low tide. Here is a table showing the relationship between the time and depth of a port in a certain season: