The use of bioweapons is prohibited by international law.

He was sitting and hugging his knees, talking with his friends.

He is studying the function of the dilator naris.

The external anal sphincter plays a crucial role in helping us control defecation.

I use hair tonic every night.

I bought a drink from the vending machine.

We learned about the importance of sex education at school.

This product is a parallel import.

My child is currently learning educational kanji.

It's difficult to get a strike in bowling.