He played a perfect fifth scale on the piano.

This fabric has high color fastness, so it is hard for the color to fade even when washed.

When it reaches absolute zero, the molecular motion of matter stops.

We go on a family trip once a year.

Your adorable smile brightens up my day.

This TV provides high-definition images.

I overslept today, so I was late.

The sphericity of this object is very high.

Double dipping is a breach of etiquette.

I am majoring in econometrics at university.