This machine is equipped with a high-efficiency heat removal system.

This machine has a function to remove excess heat.

He is learning how to operate the new machine.

I prepared emergency food and water to prepare for an earthquake.

The efficiency of this machine is very high.

This system is very efficient.

He missed school because he had a fever.

He is heating up the coffee.

What is this device used for?

He removed unnecessary items from the room.