Liquid oxygen is often used as rocket fuel.

Recently, this store has become so quiet that you can hear a pin drop.

He practices every day to master that technique.

We are putting a lot of effort into protecting intellectual property.

I plan to travel to Morocco next year.

He is learning the basics of mathematics.

This park was completely artificially made.

The kiwi is a symbolic bird of New Zealand.

My father runs a warehouse business.

The reporter is investigating the details of the incident.