The two poles of the Earth are the North Pole and the South Pole.

A conic section is a part of geometry, including circles, ellipses, hyperbolas, and parabolas.

He was tuning the radio, looking for his favorite music.

He was tuning the radio and listening to his favorite music.

He started a special exercise to train his infraspinatus muscle.

He is doing special exercises to strengthen his spinalis muscle.

It looked like he had a bony spine on his back.

The mobile phone communication is unstable because the base station in this area is broken.

The origin of the name Asahi means the rising sun.

I mailed a letter at the post office.