C1 noun ˈɛksəʊˌplænɪt
exoplanet
绕着一颗恒星公转的星球,位于太阳系外
Meaning
A planet that orbits a star outside the solar system.
Example
Astronomers have discovered thousands of exoplanets in the last decade.
天文学家在过去十年发现了成千上万的外行星。