He injured his arm in a workplace accident.

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.

Workers of all countries, unite, let's show our power.