Tiān / wén / xué / jiā / zhèng / zài / yán / jiū / Xiān / nǚ / zuò / xīng / xì / de / yùn / dòng / hé / jié / gòu天文学家正在研究仙女座星系的运动和结构。Astronomers are studying the movement and structure of the Andromeda Galaxy.