It is important to understand the general rules of this game.

He has mastery of the Japanese language.

He is well versed in Japanese.

When the circulation of information becomes smooth, business becomes more efficient.

This book is widely circulated throughout the country.

We are working towards this common goal.

We are building a deeper bond by sharing hobbies.

His words conveyed a keen feeling.

He works at a major news agency.

A passer-by picked up the wallet I dropped.