He broke his leg bone.

I like the unique texture of flying fish roe sushi.

Last night, I went to see a movie with my friends.

Please watch yourself when crossing the road.

Mirai is my best friend.

An imaginary number is a concept of a number different from a real number, which is a number whose square root is a negative number.

My fountain pen needs new ink.

What is this gas?

Noble gases are known for not participating in chemical reactions.

He refused my proposal.