太阳在夏天非常强烈。
The ___sun is very strong in summer.
冬天里,我们喜欢在阳台上晒太阳。
In winter, we love to sit on the balcony and soak up the ___sun.
天文学家观测到一颗行星围绕另一颗恒星运行。
Astronomers observed a planet orbiting another ___sun.