Further north, you'll find the Canadian Shield, a hilly region of lakes and swamps that stretches across northern Canada with rocks that are 1 billion years old.

再往北走，你会发现加拿大地盾，这是一个遍布湖泊和沼泽的丘陵地区，横跨加拿大北部，岩石的历史已经有10亿年了。

Niagara Falls will have completely eroded away into Lake Erie and ceased to exist and due to glacial rebound and erosion, the many lakes of the Canadian Shield will also cease to exist.

尼亚加拉大瀑布将完全被侵蚀掉，变成伊利湖而不复存在，由于冰川的反弹和侵蚀，加拿大地盾区的许多湖泊也将不复存在。

Half of the country is covered by what's called the Canadian Shield — a huge area of exposed rock with only a tiny layer of topsoil where farming is effectively impossible and winter temperatures are severely cold.

加拿大一半的国土被所谓的加拿大地盾覆盖——这是一大片裸露的岩石，只有一小层表土，在那里几乎不可能耕作，冬季气温非常寒冷。