In the deep parts of the sea, there are many creatures that emit phosphorescence.

He holds the reins of politics.

I will submit a proposal for a new project tomorrow.

I will propose a new project at tomorrow's meeting.

He gripped the steering wheel and steered the ship.

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.