'free' makes us feel good and 'free' has no downside; it we didn't pay we've got nothing to lose if our decision turns out to be wrong.

“免费”让我们感觉良好，同时它也没有不好的一面。因为我们没花钱，所以，如果我们选择错了，我们也不会损失什么。

youdao

And using these cells in potentially lifesaving research is morally wrong because even if that embryo was only a few cells or just one cell, it has the potential to be a human being.

而用胚胎干细胞进行潜在的医学研究则更是道德错误，因为即使这胚胎只有几个细胞甚至一个细胞，它仍有机会发育成一个人。

youdao

Although this brings great advantages in treating diseases early, it obviously has massive disadvantages if the diagnosis is actually wrong.

尽管这非常有助于及早对疾病进行治疗，但是如果诊断错误的话，显然也会造成严重损害。

youdao

On the other hand, if Groupon is wrong and it has to keep spending to attract customers the way it is now, then it will likely never be profitable and those ad dollars will go away anyway.

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If they get it wrong, then history has shown its managers have indeed done well at avoiding the landmines.

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"The use of genetic vaccination has inherent dangers because it may be difficult to reverse the effects if something goes wrong, " she said.

BBC: DNA vaccines 'could fight MS'