单词cepheid-variable
网络: 造父变星；仙王座变星；仙王座造父变星
They discovered almost 800 Cepheid variable stars, a special class of pulsating star used for accurate distance measurement.
他们发现了差不多800个造父变星，一种用于准确测量距离的特殊变星。
Another type of standard candle is a type of star called a Cepheid variable.
另一种标准烛光是一种叫做造父变星的恒星。