He took a deep breath, breathed in the fresh air, and showed a relaxed expression.

He is bad at remembering numbers.

Where is my canteen?

The water level of the river has suddenly risen.

This data is showing a significant change over time.

He treats us as a big friend.

I want to spend time with you anytime.

A salt pan is an important facility for making salt from seawater.

The electromagnetic waves in this room are too strong, causing the electronic devices to malfunction.

A positron is a particle that carries a charge opposite to that of an electron.