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原標(biāo)題：chinese腹肌体育生gay

學(xué)習(xí)快評(píng)丨qibao666888　　土??(tu)星??(xing)環(huán)??(huan)這??(zhe)個(gè)??(ge)“大??(da)圓??(yuan)環(huán)??(huan)”的??(de)直??(zhi)徑??(jing)大?(da)約??(yue)是??(shi)28萬??(wan)公??(gong)里??(li)??，相??(xiang)當(dāng)??(dang)于??(yu)地??(di)月??(yue)距??(ju)離??(li)的??(de)三??(san)分??(fen)之??(zhi)二??(er)??，但??(dan)是??(shi)土??(tu)星??(xing)環(huán)??(huan)的??(de)平??(ping)均??(jun)垂??(chui)直??(zhi)厚??(hou)度??(du)卻??(que)只??(zhi)有??(you)10米??(mi)左??(zuo)右?(you)?。??所??(suo)以??(yi)說??(shuo)??，土??(tu)星??(xing)的??(de)光??(guang)環(huán)??(huan)“薄?(bo)如??(ru)蟬??(chan)翼??(yi)”??，那??(na)它??(ta)是??(shi)由??(you)什??(shen)么?(me)組??(zu)成??(cheng)的??(de)呢??(ne)？??。