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1.hone skills 磨练技能
But until you adapt and hone your skills in these areas, you may find yourself short on food.
但你在这些地方学会适应，并且磨练你的技能的时候，你会发现自己缺乏食物。
2.set record 创下纪录
But each day, they set another record for surviving in space.
但是无论每一天，他们都在创造着在太空生存的记录。
3.piles of 成堆
The ones who are are some cows grazing among piles of garbage.
这里只有一些在成堆的垃圾之中放牧的奶牛。
