t-yearsCOCA¹⁶¹⁸⁸² 基本例句 🌏暴露量 Astronomers studying T Chamaeleontis T Cha, a faint star350 light-years from Earth in the southern constellation of Chamaeleon, detected a large gap in a disc of material around the star. 研究“ T蜒” T Cha这颗在南天的蜒座中距地球350光年的黯淡恒星的天文学家们观测到在恒星周围的盘状物质中出现了一个大裂口。 yeeyan