Every year, thousands of firefighters put their lives at risk to battle merciless blazes.
每年数千名消防员冒着生命危险对抗凶残的火。
As robots like predator drones replace cops and soldiers, fewer people may have to put their lives at risk.
随着和捕食者无人机这样的机器人取代警察和士兵,要冒着生命危险的人数会越少。
So if we know all of this, then why do we repeatedly see people putting their lives at risk on the mountain?
所以如果我们都知道这个,那为什么我们总是一次次地看着人们冒着生命危险去登山呢?
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