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来源：雅诚德英语网
In 1912, Alfred Wegener proposed, in a widely debated theory that came to be called continental drift, that Earth's continents were mobile.
1912年，阿尔弗雷德·魏格纳在一个被称为“大陆漂移”的理论中提出，地球上的大陆是可移动的。
In 1912, Alfred Wegener proposed, in a widely debated theory that came to be called continental drift, that Earth's continents were mobile.
1912年，阿尔弗雷德·魏格纳在一个被称为“大陆漂移”的理论中提出，地球上的大陆是可移动的。