He is known as an activist for environmental issues.

Can you tell me how to operate this machine?

The engine is running normally.

The trunk of an elephant is very large.

His behavior is like buffoonery.

It is said that this watercourse was deep enough for large ships to pass through in the past.

There is a problem with the engine starting.

He started the car engine.

He is my same person, always acting together.

There will be a personnel change in the department from next month.