The gutter of this book is too wide, making it hard to read.

His drum performance sometimes goes offbeat.

His popularity spread across the country in an instant.

His popularity increased in the blink of an eye.

My apartment is covered with a relatively small tatami mat.

My room is made of Edo-style tatami mats.

He completed the project in a week.

I'm always busy during the daytime, and I only have time to rest at night.

He had been working overseas for an extended period of time.

The theory of spacetime is an important part of physics.