Many tourists from the world frequent the Niagara Falls in the US and Canada to observe the onrush of its water fall.

许多来自世界各地的游客们经常光顾位于美国和加拿大的尼亚加拉大瀑布，以观察其水流的汹涌澎湃。

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Niagara Waterfalls are 670 metres in width and fall 56 metres in an awesome sheet of water.

尼亚加拉瀑布宽670米，白色水幕飞流直下56米，令人叹为观止。

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Assuming that about 50.5 thousand gallons of water fall over both sides of the Niagara Falls each second, 1 trillion gallons would require more than three weeks.

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