In this factory, they are melting iron using an electric arc furnace.

He conducted an experiment using an arc lamp.

We connected two metal parts using butt welding.

He is a professional welder.

He is a very excellent technician.

The advancement of science and technology has greatly changed our lives.

He is good at solving technical problems.

Information technology plays a very important role in modern society.

He lost everything.

She is planning a date with her current boyfriend.