米兰科维奇没有任何证据。
米兰科维奇在20世纪早期提出，冰河时代是由地球绕太阳运行轨道的变化引起的。
Milankovitch proposed in the early twentieth century that the ice ages were caused by variations in the Earth's orbit around the Sun.
当米兰科维奇在20世纪20年代首次提出这个理论时，他的许多同事都持怀疑态度。
Now, when Milankovitch first proposed this theory in the 1920s, many of his colleagues were skeptical.
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