He is in the middle of studying for the exam.

Cultural exchange between China and Korea is very important.

Mr. Nakai is my best friend.

Thermochemistry is a branch of chemistry that studies the interaction of heat and matter.

Due to the impact of African swine fever, the price of pork is rising.

West Nile fever is an infectious disease transmitted by mosquitoes.

We flew in the sky in a hot-air balloon.

He started exercises to strengthen his gluteus medius muscle.

The whimbrel is a bird often seen on the coast.

The whimbrel is a bird often seen on the coast.