He started a special exercise to strengthen his articularis genus muscle.

He is doing special exercises to strengthen his popliteus muscle.

He pushed the door open with his hand.

He has a unique character.

For now, please give me a cup of coffee.

I am majoring in immunology at university.

He underwent a cerebrospinal fluid test.

The cane toad is causing a big problem in Australia.

The smoker was smoking a cigarette outside the restaurant.

I heard the croaking of the rain frog and felt the arrival of spring.