Cepheid variable stars are stars whose brightness changes at regular periods.造父变星是一种光线按规律周期发生变化的恒星.His first great discovery was made when he recognized a Cepheid variable star.他的首次重大发现产生于他认识了一颗造父变星的时候....

cepheid的音标：cepheid的英式发音音标为：['kɪfaɪd]cepheid的美式发音音标为：['kɪfaɪd]...

造父变星...