The breeding method of this species is very unique.

This type of fish breeds quickly.

Japan began the colonisation of Hokkaido in the 19th century.

Japan once colonised Hokkaido.

The study of chromosomes is an important part of genetics.

There are several misprints in this book.

He is in a sinecure.

His painting has a unique stroke, and you can recognize it at a glance.

He showed his true colors under difficult circumstances.

He was in charge of the dramatization of the novel for the movie.