The lux of this room is very high.

He made a model of a quadrangular pyramid.

I am collecting acrylic stands of the new anime characters.

The policies of Abenomics had a significant impact on the Japanese economy.

I was tired last night, so I fell into a deep sleep as soon as I got into bed.

I had a deep sleep last night.

I am taking medicine for a cold.

Education about sex is very important.

They went back to the room and had sex.

Linux is an open-source operating system.