My daughter goes to the nursery school every day.

Bioweapons are a major threat to humanity.

The children were playing by beating the pellet drum.

He was anxious about starting a new business, but I encouraged him by saying, 'Even a journey of a thousand miles begins with a single step.'

A positive-semidefinite matrix is one of the important concepts in linear algebra.

I am planning to go to school tomorrow.

He sacrificed his time for the team.

This silkworm produces beautiful silk.

Physical education is my favorite class.

Education is an important element in building the foundation of society.