The traffic light turned red, so I stopped.

My grandfather uses a hearing aid.

We have finished signing the contract.

He succeeded in business by using the strategy of befriending the distant and attacking the near.

He ignored my opinion by coercion.

We created a contract for the new project.

He is a world-renowned ichthyologist.

The calculation of determinants is an important part of mathematics.

There is a rumor that a fish with a human-like face lives in that pond.

My new camera comes with a fisheye lens.