He studied deeply about communism.

This alloy has a eutectic composition.

We prioritize customer satisfaction above all else.

We will do our best to solve this problem.

I am studying Japanese.

Their relationship is codependent, they depend on each other.

He and I share a lot of things.

She can speak both languages fluently.

He learned about the concept of synergism in theology class.

The coexistence of humans and nature is important for the sustainability of the Earth.