sextans 基本例句 n.天六分仪座 In a5- year study, the team looked at600 active galaxies in a well- studied patch of sky in the constellation Sextans that is about10 times the size of the full moon as seen from Earth. 在为期5年的研究中，研究小组观测了六分仪座一片天区中的600个活动星系，该天区从地球上看大约有10个满月的大小，天文学家们对该天区已经多有研究。 yeeyan