We need to measure the concentration of this liquid.

We need accurate measurements for the science experiment.

He measured the size of the room.

This bottle contains an unknown liquid.

Your cooperation is needed for this project.

I need you.

Liquid nitrogen is very cold, so care must be taken when handling it.

Liquid oxygen is often used as rocket fuel.

I wash my hands with liquid soap every day.

Do you understand the necessity of this project?