He lost his virginity yesterday.

He lost his virginity last night.

The external urethral sphincter is an important muscle for controlling the excretion of urine.

This consumer boycott is a response to the inappropriate actions of the company.

They carried out a boycott.

It's difficult to spot changes in odds in horse racing.

This area is equipped with a sewer installed by the prefecture, making life very convenient.

Many students are gathering in the lecture hall.

He is not an ordinary human.

He planed the wood and made a model airplane.