His actions demonstrate a noble spirit.

Looking at recent trends, online shopping is increasing.

Please check the quantity of this product.

Please check the quantity of this product.

Where is my water bottle?

Today's rainfall was higher than average.

It's difficult to calculate the sum of this series.

He took a deep breath and inhaled the fresh air.

The dual number does not exist in English grammar.

The service life of this machine is 10 years.