He has to walk a kilometer and a half everyday to reach a site where he takes snow samples.

他每天必须走一公里半才能到达他采集雪样的地点。

Greenpeace said its scientists gathered water and snow samples from Antarctica during a visit between January to March of this year. Laboratory tests confirmed the effect of humanity on the continent.

绿色和平组织表示，该组织于今年1- 3月派出一批科学家前往南极进行考察，并采集了水样、雪样进行检测。实验室测试结果证实了人类对南极大陆的影响。