This old battery is no longer usable.

The electrolytic capacitor is an important part of electronic equipment.

He does exercises to train his gluteus muscle every day.

We decided to install a personal electricity generation system.

The properties of electrolytes are one of the important themes in physical chemistry.

My grandfather works in the cultivated field every day.

𫌷 is an old form of telegraph.

An electron gun is a device for generating an electron beam.

Denver is the capital of Colorado.

His wife is truly an extremely overbearing wife, controlling everything within the household.