Similarly, Mars is so heavily cratered that the upper crust has been stirred up like soil tilled by a gardener.Water and wind then scattered this material.是什么意思_Similarly, Mars is so heavily cratered that the upper crust has been stirred up like soil tilled by a gardener.Water and wind then scattered this material.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句