Two squirrel monkeys that were colour-blind from birth have had their vision restored after receiving gene therapy.

通过接受基因疗法，两只天生色盲的松鼠猴现在已经能辨别颜色了。

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What's more, it's impossible to hide the fact that people are receiving Botox, he adds – and that would invalidate the double-blind nature of the experiment.

此外，他还补充道，谁在注射肉毒杆菌素这一事实是无法掩盖的，这会使试验失去双盲性。

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He was born blind to a poor family and has been drawing since childhood, without receiving any formal training.

阿马甘自幼喜欢画画，但因家境贫穷，从未受过正规训练。

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The authorities in Brazil have arrested 60 policemen accused of receiving regular payments from drug dealers to turn a blind eye to their activities in several shanty towns of Rio de Janeiro.

BBC: Latin America & Caribbean