在越野旅程中，动物们必须穿越许多面积较小的水域，比如河流和小湖泊。
In their cross-country journey, the animals must traverse many smaller bodies of water, such as rivers and small lakes.
我将去更多的地方，攀登更多的高山，穿越更多河流。
I would go more places. I would climb more mountains and swim more rivers.
直到1840年，由于先进的工程技术使经由伊利运河穿越俄亥俄山谷中河流的水路运输成为现实，这条荒野之路的用途开始下降。
By 1840, use of the Wilderness Road had declined, as advances in engineering had enabled waterway travel via the Erie Canal and through the rivers of the Ohio Valley.
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