The impact of the unequal treaty is still deeply rooted in our society.

He injured his arm in a workplace accident.

He lost his virginity last night.

He lost his virginity yesterday.

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

Echinoderms are a type of marine life, many of which have star-shaped bodies.

He is majoring in moral philosophy at university.

He is a famous athlete.

The characteristic of annelids is that their bodies are divided into ring-shaped segments.

Living together with him was a new experience for me.