I'm worried about his health condition.

There are many novelty works on display in this museum.

He is interested in curious creatures.

In the traditional Japanese number system, there is a number called 'fukashigi'.

This forest has a mysterious atmosphere.

He is not good at expressing his feelings in words.

Using regular expressions, we search for patterns in strings.

He ran 100 meters in 10 seconds.

He goes to the gym every day to train his upper body.

It's difficult to understand his mental state.