While the potential for physical hazards in Antarctica is high, Precious says social dynamics can prove more problematic. When relationships break down, the fallout can be hard to rectify, and hard to control, he says.
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全球已進行超過100宗子宮移植手術，誕生了70多名健康嬰兒。
That's certainly part of it, yes. But I think much more importantly, dreaming big is a muscle. You have to exercise it from time to time. Each time I come up with a grand vision and sink dozens to hundreds of hours into it, only to walk away unfinished, I learn a bit more about how to make a dream become real.
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