I learned about the properties of phosphorous acid in chemistry class.

He is a very stingy person.

He is known for his miserly character.

A tropical rainforest is one of the most biodiverse ecosystems on Earth.

She beat the tambourine to keep the rhythm.

Gonorrhea is one of the sexually transmitted diseases, and appropriate treatment is necessary.

The bamboo forest was swaying in the wind, making a beautiful sound.

In this experiment, we will measure the critical Reynolds number.

The contours of her face are beautiful and artistic.

My father has been engaged in forestry for many years.