translation.en: Imagine, if you will, dragging a sled, as you just saw in that video clip, with 170 pounds of gear, in it everything you need to survive on your Antarctic trek.
translation.zh: 想像一下，如果你将要 想视频里的那样，拖动一个雪橇， 上面有重达170磅的行李， 里面装的是你在南极苦旅重所需的所有工具。