He came to America as an immigrant when he was young.

In this area, beneficial animals play an important role in maintaining the balance of nature.

He entered the forest with a shotgun.

The specific gravity of this substance is higher than water.

This factory uses fuel oil as its main fuel.

I am planning to go to Chongqing next week.

He cooked using a gas stove.

Her dress was made of velvet and it was very beautiful.

He is majoring in veterinary medicine.

It's important for teenagers to have their own opinions.