cepheid造句
2024年06月19日 18:12:51
Cepheid variable stars are stars whose brightness changes at regular periods.
造父變星是一種光線按規(guī)律周期發(fā)生變化的恒星.
His first great discovery was made when he recognized a
Cepheid variable star.
他的首次重大發(fā)現(xiàn)產(chǎn)生于他認識了一顆造父變星的時候.