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来源:雅诚德英语网
This, plus the more remote chance of a big collision, has stimulated efforts to map the orbits of potential threats so that people will be prepared.
加之存在更大撞击几率,这激励人们绘制出有潜在威胁的小行星运行轨道,那样人们就会做好准备。
This, plus the more remote chance of a big collision, has stimulated efforts to map the orbits of potential threats so that people will be prepared.
加之存在更大撞击几率,这激励人们绘制出有潜在威胁的小行星运行轨道,那样人们就会做好准备。