An irregular galaxy is a type of galaxy that does not have a definite shape.

His music skillfully uses dissonance.

He remained silent and didn't say anything.

Even though he is a doctor, he doesn't take care of his own health. It's truly a case of 'physician, heal thyself'.

Père David's deer, also known as the 'four unlike', is a species of deer native to China and is listed as an endangered species.

In genetics, linkage disequilibrium is a very important concept.

He felt cognitive dissonance between his actions and beliefs.

He has a one-track mind, so if he fails once, he never tries the same thing again.

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.

鸕鷀草葺不合 is my favorite classic poem.