It can cause the climate to change in just a few hundred years.
它可能导致气候在短短几百年内就发生变化。
Just over a hundred years ago, everyone thought it was impossible to fly.
就像一百多年以前，人们认为飞行是绝对不可能的。
But just a few hundred years ago, crossing the ocean was a terrifying venture.
但是就在几百年前，穿越大西洋还是令人恐惧的冒险。
But just a few hundred years ago, crossing the ocean was a terrifying venture.
但是就在几百年前，穿越大西洋还是令人恐惧的冒险。
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