The Dutch have been fighting the rising and falling tides for centuries, building dikes and pumping water out of areas that are below sea level.
荷兰人几个世纪以来一直在不断地与大自然的潮涨潮落相抗争，不停地筑堤挖渠，将积水从低于海平面的地区抽走。
Starting about 8, 000 years ago, however, the lake level dropped dramatically, falling from 570 meters (1, 870 feet) to about 320 meters (1, 050 feet) above sea level.
然而，从8000年前开始，湖水急剧地下降，从海拔570米(1870英尺)到320米(1050英尺)。
The total varying trend of Jurassic sea-level is gradually ascending, and then the sea-level is at the static stage without obvious falling.
侏罗纪海平面总的变化趋势是逐渐上升的，然后海平面处于静止阶段，没有明显的下降周期。
From the soil erosion state of China and the globe water circulating and the atmosphere falling action, point out that soil erosion is one of the factors of sea level going up.
从中国实际出发，并结合全球水汽循环及水力作用，指出水土流失也是引起海平面升高的一个重要因素。
Flood and ebb, it's about timing: Tide is a phenomenon of regular rising and falling of sea level mainly influenced by the gravitation of sun and moon.
涨潮退潮，掌握时机：潮汐是一种有规律的海面升降现象，主要是受太阳与月亮引力的影响。
Flood and ebb, it's about timing: Tide is a phenomenon of regular rising and falling of sea level mainly influenced by the gravitation of sun and moon.
涨潮退潮，掌握时机：潮汐是一种有规律的海面升降现象，主要是受太阳与月亮引力的影响。
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