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.

He went to America as an international student.

He is working at a school as a student teacher.

That high school girl studies in the library every day.

He is known as an expert in palaeoclimatology.

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.