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来源:雅诚德英语网
Because the Moon has no atmosphere, its surface is not subject to erosion, so it retains the marks of its early history.
由于月球没有大气层,它的表面不会受到侵蚀,所以它保留了早期历史的痕迹。
Because the Moon has no atmosphere, its surface is not subject to erosion, so it retains the marks of its early history.
由于月球没有大气层,它的表面不会受到侵蚀,所以它保留了早期历史的痕迹。