重复
chóng fù
to repeat
to duplicate; CL:個|个[ge4]; variant of 重複|重复[chong2 fu4]
again (重) + return (复) = to repeat
重 carries the sense of layering or stacking — doing something again on top of what was already done. 复 adds the idea of returning or going back, a person moving through time and arriving again at the same place.
请不要重复同样的错误。
qǐng bú yào chóng fù tóng yàng de cuò wù 。
please don't repeat the same mistake.
他总是重复说过的话，让人觉得很烦。
tā zǒng shì chóng fù shuō guò de huà ， ràng rén jué de hěn fán 。
he always repeats what he has already said, which people find very annoying.