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.

Believing that failure is a stepping stone to success, he challenged again.

Believing that failure leads to success, he continued to challenge himself over and over again.

A healthy diet and moderate exercise help boost immunity.

He is an expert in mechanics.

The Earth maintains its shape due to centrifugal force.

He has a strong ability to get things done to make the project successful.

His imagination is infinite.

This contract takes effect from the date of signature.

He abused that power.