Sanzenaki is my best friend.

Their vocal trio captivated the audience.

I think this fossil is from a trilobite.

He is studying the concept of the 'three talents' in ancient China.

Mr. Mitoma is my best friend.

I use a set square to draw shapes.

In chemistry class, I learned about acid anhydride.

In chemistry class, I learned about acidic oxides.

Lower fatty acids play an important role in the human body.

Essential fatty acids are necessary to be taken from our diet because our body cannot produce them on its own.