This festival is held every year.

This food is preserved in a vacuum.

This experiment is conducted in a vacuum.

I'm worried about his health condition.

We conducted a new experiment in science class.

We will conduct a new chemistry experiment tomorrow.

This old radio uses a vacuum tube.

This cheese is vacuum packed and can be stored for a long time.

I am preserving food in a vacuum pack.

He fell into a state of lethargy after the exam.