A positive number is a number greater than zero.

I was moved by his sincerity.

I feel the passage of time.

I will start working as a regular employee from next month.

He is living a life like a saint.

The air in this mountain is very fresh.

He was in full dress for the wedding.

The stratosphere is a part of the Earth's atmosphere, located above the troposphere.

He holds the power of life and death in that country.

He is preventing a cold by drinking garlic extract.