国际性河流的流域涉及145个国家的边界，其中一些河流流经数个国家。
International river basins extend across the borders of 145 countries, and some rivers flow through several countries.
形成我们农场东部边界的一条河流一直在我们生活中发挥着重要作用。
The river which forms the eastern boundary of our farm has always played an important part in our lives.
在那接近西伯利亚边界冰冻河流的黑龙江部分地区，森林曾经非常繁茂，该地区因此而被称为北大荒。
In parts of Heilongjiang province close to the frozen river border with Siberia, the forests were once so dense that the area was known as the Great Northern Wilderness.
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