The second map shows Earth at the time of launch. That's time zero.
第二幅地图显示了没有时间显示的地球形成时期。
The total proposition method with master map takes the second place, and less time.
有标准图的总命题评分法效度和信度相比于前者略低，但比较省时；
The total proposition method with master map takes the second place, and less time.
有标准图的总命题评分法效度和信度相比于前者略低，但比较省时；
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