He learned about unguligradism in his zoology class.

His research mainly focuses on the plantigradism of mammals.

His actions were considered part of propaganda by action.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

He is known as an expert in subcritical nuclear experiments.

The anterior scalene muscle is part of the neck muscles and plays a role in assisting with respiration.

In Japanese grammar, verbs with k-row irregular conjugation are characteristic.

Verbs of the sa-line irregular conjugation are a special existence in Japanese.

Verbs of the 'ra-row irregular conjugation' are a special existence in Japanese.

Understanding the rules of 'Ha-gyou tenko' is difficult.