一旦活跃起来
Once active
以上为机器翻译结果，长、整句建议使用 人工翻译 。
我们想揭示的就是，一旦山峰被抬高并越过雪线，以冰川为代表的十分明显的侵蚀作用就开始活跃起来。
"What we show is that, once the mountain is pushed up across the snow line, a very effective erosion agent comes into play and that is represented by glaciers," said Egholm.
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