advance的含义

For example, during past ice ages, glaciers advanced down through North America and Europe and gradually cut off parts of populations from one another.

advanced down在这里是什么意思?


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最佳答案 2016-08-16 17:15

advanced down = went down 前行

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  • 追梦无悔 提出于 2016-08-12 15:47

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