She was delighted to find the ring.

This dish uses olive oil, which has been used since ancient times.

He interprets the world from a materialistic perspective.

We need transportation to carry a large number of travelers.

In the ecosystem of this area, 'inquilinism', where certain species parasitize the nests of other species, is common.

In Japan, the system of different surnames for married couples is not yet recognized.

In order to understand the actual condition of this company, we need to investigate more deeply.

He is a very shy person in real life.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.

Computational linguistics is the study of analyzing human language with computers.