Phrase
double star
物理双星
A pair of stars that orbit around their common center of gravity; a binary star.
- 1.
Two stars which form a stellar system, such that they orbit the point of equilibrium of their gravitational fields; a binary star.
两颗星组成一个恒星系统,围绕其引力场平衡点运行;即双星。
- 2.
Two stars that appear to be one when seen with the naked eye, either because they orbit one another (binary stars) or happen to be in the same line of sight even though they are separated by a great distance (optical binaries).
肉眼看来像一颗星的两颗星,或因彼此绕行(双星),或因虽相距遥远却恰好在同一视线上(光学双星)。
双星；两颗星组成一个恒星系统,围绕其引力场平衡点运行;即双星。；肉眼看来像一颗星的两颗星,或因彼此绕行(双星),或因虽相距遥远却恰好在同一视线上(光学双星)。；双星(紧密相连的二颗星；借望远镜始可分辨者)
In use
Through my telescope, I could clearly see the double star system in the constellation Lyra.
Our textbook explains that a double star can appear as one point of light to the naked eye.
I spent the whole night photographing a beautiful double star near the Milky Way.
be a double star
双星系指从地球上看起来靠得很近的两颗星。
The pair is a double star visible with a telescope.
这对是双星，用望远镜可见。
observe something as a double star
Astronomers observed the system as a double star.
天文学家观测到这个系统是一对双星。
consist of a double star
Connections
Confusing words
- binary star
- 双星（物理双星） · binary star 特指两颗恒星在引力作用下相互绕转的物理双星系统；而 double star 更广义，可以指任何在视线上看起来靠近的两颗星，不一定有物理联系。
Learner notes
Grammar Note
可数名词，常用单数形式
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.