Long life means long life, and you can live to be a hundred years old. Language "Cai He" this fellow light lamp long life. Have a positive meaning, used for blessing, mainly referring to children.

Later, I carefully observed the things about longevity in my life. Old-fashioned raccoons will be embroidered with the pattern of "longevity" and engraved with the words "longevity" on children's longevity locks.

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"Long life" was originally a blessing, but now it has been extended to more meanings. "Hundred" means full. "Hundred years old" means the end. Usually used in self-mockery, such as "everyone dies, and I am a hundred years old …" and so on. Therefore, it is not easy to use this word in formal occasions.

"Longevity" has always been people's dream. A new achievement by American and Italian scientists shows that a genetic variation of mitochondrial DNA may be one of the reasons why the longevity exceeds 100 years.

According to the press release issued by California Institute of Technology on June 5438+02, it is the first time that centenarians have genetic markers so obviously different from those of young people. Scientists say their next goal is to find out the exact physiological function of this genetic variation.