Let's make a plan for the next term.

Let's drink the coffee before it cools down.

The exam period is very busy.

The new season of my favorite television show has started.

This invention brought about an epoch-making advancement in science and technology.

"Once in a lifetime" means to cherish the encounter that happens only once in one's lifetime.

He missed a once-in-a-lifetime opportunity.

The story of the time of creation is mysterious and interesting.

What is the half-life of this substance?

A new school term is starting.