The doctor used an electrocardiograph to check the condition of my heart.

He measured muscle activity using an electromyograph.

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.

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.