名词
中文翻译：Unknown
同义词：
['mean tide', 'mean high water', 'mean spring tide', "mean low water例句：1. The mean tide is when the sea level is at its lowest point.（平均潮汐是海平面最低的时候。）2. The mean high water marks the highest point of the year's tides.（平均高潮标志着一年中潮汐的最高点。）"]
例句：
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1. The mean tide is when the sea level is at its lowest point.
平均潮汐是海平面最低的时候。
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2. The mean high water marks the highest point of the year's tides.
平均高潮标志着一年中潮汐的最高点。
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3.The mean low water is when the sea level is at its highest point.
平均低潮是海平面最高的时候。