He was reading a book about the ancient Egyptian sun god.

The ocean currents can change due to the effect of the solar tide.

He is the type of person who thinks it's a moonlit night if it's bright, so he only has a one-sided perspective.

That man-child is still living in his parents' house.

He is called a 'kid's room uncle', and is alienated from society.

I reserved a single room.

We booked a double room.

The gem emits a beautiful light in the dark.

The gem emits light in the dark.

The diamond sheds beautiful light when it receives the sun's light.