欧美丰满肥臀一区,亚洲乱伦性爱小说视频,最新无码人妻在线不卡,京广成人小电影a三区,先锋色色AV网,亚洲伊人涩涩

原標(biāo)題：av东京热无码专区

學(xué)習(xí)快評(píng)丨qibao666888　　明??(ming)天??(tian)(24日??(ri))凌??(ling)晨??(chen)??，太??(tai)陽(yáng)?(yang)系?(xi)八??(ba)大??(da)行??(xing)星??(xing)之??(zhi)一??(yi)的??(de)土??(tu)星?(xing)??，將?(jiang)上??(shang)演??(yan)神??(shen)奇??(qi)的??(de)光??(guang)環(huán)??(huan)“消??(xiao)失??(shi)術(shù)?(shu)”??。?我??(wo)們??(men)原?(yuan)來(lái)??(lai)看??(kan)到??(dao)的??(de)土??(tu)星??(xing)??，周??(zhou)圍??(wei)有??(you)一??(yi)圈?(quan)漂??(piao)亮??(liang)的??(de)光??(guang)環(huán)??(huan)??，所??(suo)以?(yi)它?(ta)也??(ye)被??(bei)稱??(cheng)為??(wei)“指??(zhi)環(huán)??(huan)王??(wang)”或??(huo)者??(zhe)是??(shi)“草??(cao)帽??(mao)星??(xing)”??。但??(dan)明?(ming)天??(tian)凌??(ling)晨?(chen)??，這??(zhe)個(gè)??(ge)光??(guang)環(huán)??(huan)在?(zai)地??(di)球??(qiu)觀??(guan)測(cè)??(ce)者??(zhe)的??(de)視??(shi)野?(ye)中??(zhong)就??(jiu)要??(yao)“消??(xiao)失?(shi)”了?(le)??，這??(zhe)是??(shi)怎?(zen)么??(me)回??(hui)事??(shi)呢??(ne)？?　　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(wàn)??(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(shuō)??(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)？??。