He is majoring in petrology at university.

The students lined up in response to the teacher's instructions.

He cleaned the bowl of the pipe thoroughly.

This cigarette contains carcinogens.

I used binoculars to observe birds in the mountains.

It is said that this substance has a high carcinogenicity.

Minata is now 20 years old.

He is good at programming, so he started a new project as if he were setting sail on his strong point.

Please refrain from going out because a typhoon is approaching.

Like his name, Ryo, he has the strength to endure hardships.