Trolley buses are very convenient as a means of urban transportation.

Electromagnetic radiation conveys energy in forms such as light and radio waves.

My father drives a truck.

He is wearing an undershirt.

The freight train passed through the station.

This product is made of high-quality silicone resin.

I need to buy a new mattress.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

The Mesolithic is the era between the Paleolithic and the Neolithic.