He is majoring in geology at university.

He participated in the anti-Japanese movement.

This medicine has a delayed effect, so you may not feel the effect immediately.

It is important for men to regularly clean smegma.

The treatment efficacy of this medicine is very high.

I'm always impressed by his skillful handiwork.

Geologists believe that this area was formed by a graben.

Nazism is a political ideology that was born in Germany in the early 20th century.

It seems that he is suffering from chuunibyou.

He often behaves strangely because of his 'chuunibyou' (middle-school 2nd year syndrome).