This biennial plant matures and blooms over the course of two years.

The students on a field trip visited the museum.

He was hiding the fact that he was an illegitimate child.

The ecosystem of zoobenthos is an important field of study in marine biology.

The study of benthos is an important field in marine biology.

Phytobenthos is an important part of the marine ecosystem.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He said, 'Man shall not live by bread alone,' teaching me that spiritual satisfaction is also important.