由于全球试验注册的要求不同，许多跨国跨中心试验在多个注册中心注册。

Because of the varying requirements for trial registration around the world, many multinational, multicentre trials are registered in more than one registry.

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它不只使注册试验时须报告的内容标准化，而且建立了一个全球试验鉴定系统，为每项合格的试验颁发一个独有的参考号码。

It has not only standardized what must be reported to register a trial but is creating a global trial identification system that will confer a unique reference number on every qualified trial.

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按他的看法，如果报告中人类导致全球变暖的说法是正确的，我们就应该采取行动——因为我们再没有另一个星球进行试验。

In his opinion, if the statement that humans cause global warming is correct, we should act—because we don't have another planet to experiment on.

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