I take a cold bath every morning to strengthen my body.

It's difficult to adjust the hot and cold in this room.

Yesterday, I ate Korean naengmyeon for the first time.

He can always maintain calmness.

The cold air flowed into the room, making it cold.

We have developed a new method to produce charcoal from wood.

My grandfather used to work in charcoal production.

My father works in pottery manufacture.

He is learning the technique of manufacturing pottery.

My father works in the can manufacturing industry.