结果表明第一种方案更为科学，13年来中国大陆地震预报效能检验平均的R值约为0.26。

Results indicate that the first scheme is more scientific, and average R-value of recent 13 years in China's continent is about 0.26.

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再次检验下你对效能的定义。

Re-examine your definition of productivity.

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必须尝试实施检验多种艾滋病预防效能衡量机制的干预策略。

Intervention strategies that test multiple mechanisms of prevention efficacy must be attempted.

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