英语词源
- Cepheid (n.)
- type of variable star, 1904, from Delta Cephi, the name of the first such star identified, which is in the dim northern constellation Cephus, named for Greek Kepheus, a mythical king. With -id.
权威例句
- 1. 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.
- 2. 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.