The use of this service is free.

He is a famous author and a person who is respected by many people.

The users of this website are increasing every day.

I'm always amazed at her fluency in Japanese.

His Japanese is fluent.

Nonmigratory birds are here even in winter.

He caught a cold and was coughing, making a 'gohogoho' sound.

The headquarters of my company is in Tokyo.

He is studying Japanese.

The thread of this sweater tends to unravel easily.