常見(jiàn)例句雙語(yǔ)例句For 100 years astronomers have paid particular attention to a class of variable star known as the Cepheids.過(guò)去100年來(lái),天文學(xué)家特別注意一類稱作“仙王座變光星”的恒星。The Sun is not considered a variable star, but it does undergo periodic changes in activity known as the sunspot cycle.太陽(yáng)是不被認(rèn)為是變星,但它的變化進(jìn)行定期的活動(dòng)被稱為太陽(yáng)黑子周期。blog.sina.com.cnIt's a variable star, Omicron Ceti, whose proper name is Mira.鯨魚座的o星是一顆變星,它的固有名為蒭藁增二。原聲例句His first great discovery was made when he recognized a Cepheid variable star. 返回 variable star