He is an expert in ethology.

We went on a trip using the expressway.

He is good at multiplication.

We need to pay our accounts payable as soon as possible.

Our company's accounts receivable is currently one million yen.

The ribbon seal is a beautiful seal that lives in the Arctic Ocean.

He is conducting research on superconductivity.

Arthropods are a large group of animals that include insects, spiders, shrimp, and crabs.

Homophonic words are difficult, aren't they?

He is majoring in zoology at university.