We should not blindly demand proof of safety as a prerequisite for using new technology.

我们不应该盲目地要求安全性证据，作为利用新技术的先决条件。

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Allegedly, because of the lip-synch-proof demand from organizers of SF Gala in recent years, some actors decided to quit the Gala due to their singing-off-key during the rehearsal.

但据报道，由于近几年的春晚都要求真唱，以致彩排的时候不少演员频频跑调，一些人气演员也因此退出春晚。

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Lenders demand higher credit scores, bigger deposits and more stringent proof of income.

贷方对信誉等级、存款保证金和收入证明的要求都相应提高。

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Look as supermarkets take on the role of gatekeeper and actually demand proof and transparency of claims before they will permit products to be sold on their shelves.

FORBES: 2013 Food Trends Get Technical, Sustainable & Healthy

Rising oil prices amidst increasing supply and falling demand is proof of U.S. dollar weakness and portends stagflation.

FORBES: The Incredibly Uneven Recovery

What's more, they note, this law won't mean that cops will simply be able to stop anyone on the street and demand proof of legality.

FORBES: Magazine Article