He is undergoing electrotherapy for his back pain.

It's difficult to understand the principles of electrooptics.

There is an old incandescent light bulb in my room.

The utility pole fell and blocked the road.

My new electric vacuum cleaner is very quiet, making cleaning easier.

Chemotransmitters play an important role in the transmission of information between nerve cells.

Cytogenetics is a science that studies the structure and function of chromosomes and genes.

The trolleybus is very convenient as a means of urban transportation.

This area has undergone such a great change that it can be described as 'the sea has turned into a mulberry field'.

His life changed just like 'fields and mountains turn into seas and oceans'.