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學(xué)習(xí)快評(píng)丨qibao666888　　而??(er)且??(qie)這?(zhe)些??(xie)環(huán)??(huan)粒??(li)以??(yi)不??(bu)同??(tong)軌祝(gui)道??(dao)繞??(rao)土??(tu)星??(xing)旋??(xuan)轉(zhuǎn)?(zhuan)??，形??(xing)成??(cheng)了?(le)從??(cong)內(nèi)??(nei)到??(dao)外?(wai)的??(de)D、C、B、A、F、G、E七??(qi)個(gè)??(ge)主??(zhu)環(huán)??(huan)??，其??(qi)中??(zhong)B環(huán)??(huan)最??(zui)寬??(kuan)最??(zui)亮??(liang)??。??　　土??(tu)星??(xing)以??(yi)26.7度??(du)的??(de)傾??(qing)角?(jiao)繞??(rao)太??(tai)陽(yáng)??(yang)公?(gong)轉(zhuǎn)??(zhuan)??，當(dāng)?(dang)它??(ta)運(yùn)??(yun)行??(xing)到??(dao)軌??(gui)道??(dao)特??(te)定??(ding)位??(wei)置??(zhi)時(shí)??(shi)??，環(huán)??(huan)平??(ping)面??(mian)恰??(qia)好??(hao)正?(zheng)對(duì)??(dui)太??(tai)陽(yáng)??(yang)?。??此??(ci)時(shí)??(shi)??，陽(yáng)?(yang)光??(guang)以??(yi)不?(bu)足??(zu)1度?(du)的??(de)極??(ji)淺??(qian)角??(jiao)度??(du)掠??(lve)過(guò)?(guo)環(huán)??(huan)面??(mian)??，相??(xiang)當(dāng)??(dang)于??(yu)我??(wo)們??(men)側(cè)??(ce)視??(shi)一??(yi)張??(zhang)A4紙??(zhi)的??(de)邊??(bian)緣??(yuan)??，原??(yuan)本??(ben)璀??(cui)璨??(can)的??(de)光??(guang)環(huán)??(huan)便?(bian)隱??(yin)沒(méi)??(mei)在??(zai)黑??(hei)暗??(an)背??(bei)景??(jing)中??(zhong)?。。