Mr. Dan is my best friend.

We participate in school activities as a student group.

Olfactory cells play an important role in allowing us to sense smells.

What kind of seasoning are you using in this dish?

He used all his strength.

His actions became a great disgrace to his family.

The power of that robot far exceeds that of humans.

His energy towards his work is amazing.

Even though he is getting older, he still has vitality.

The topography of this area was mainly formed by the geomorphic agent of wind.