His efforts were like a mantis trying to stop a chariot, he couldn't achieve any results.

The proverb 'If you want to shoot the general, first shoot his horse' means that to achieve a big goal, you should start with small steps.

He is researching on the pathogenesis and treatment of early-onset diabetes.

This area is rich in bedded cupriferous iron sulphide deposits.

He quoted the proverb 'Once a word leaves your mouth, you cannot chase it back even with the swiftest horse' to teach me to choose my words carefully.