This fruit has rotted.

This world is ruled by the law of the jungle.

She is conducting research on the world's oldest profession.

It is believed that black dwarfs are formed by the cooling of white dwarfs.

His attitude was solemn, and everyone felt a sense of respect.

He touched her hand.

I eat breakfast every day.

Rabbits are herbivores and mainly eat grass.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

To live is to fight.