He is involved in the research of particle accelerators.

We installed a new flowmeter in the factory.

Our company is thinking of a new strategy to increase circulating capital.

The airflow in this room is very good.

Superfluidity is a part of physics, referring to the phenomenon where certain liquids flow without friction.

He became a one-eyed person due to an accident.

Oleum is a very dangerous chemical, and it requires great caution when handling.

The flow of the river is very quiet and comfortable.

He crossed many mountains and rivers to meet her.

Ryuu raised his axe.