Her graceful movements are just like a ballerina's.

Using punctuation marks correctly is important for understanding sentences.

This treaty was concluded to strengthen the friendly relations between the two countries.

I made a reservation at the restaurant.

He believes in the geocentric theory.

Global warming is a big issue that affects all of us.

A terrestrial planet may have an environment similar to Earth.

He is an expert in geophysics.

Based on the Air Pollution Control Law, factories must strengthen the management of exhaust gases.

This new product is only available for pre-order sale, and is not sold in stores.