Detailed explanation: although the ruler is longer than an inch, it will also have its shortcomings; Although the inch is shorter than the ruler, it also has its advantages.

This sentence means that everyone has his own strengths and weaknesses. We should be good at learning from others' strengths and make up for our own shortcomings.

To make a metaphor, everyone has his own advantages and disadvantages, each with its own merits. No one is full of advantages and no one is full of disadvantages.

It can generally be used to analyze the advantages and disadvantages of people or things.

But this famous saying is a commendatory word in part of speech.

I hope I can help you!