He floated a light boat on the lake.

He just made a small mistake.

He made a small mistake during the exam.

My new light vehicle is fuel-efficient and very convenient.

His opinion was treated as valueless.

His actions demonstrate his own valuelessness.

He despises his own mistakes.

One part is important.

He is good at handling a light machine gun.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.