longevity是什么意思 n. 长命, 长寿, 寿命[医] 长寿 n. duration of servicen. the property of being long-lived longevity的用法和例句: 1. My family is known for its longevity. 我们家的人是出了名的长命 2. He was working at some longevity institute. 他当时在某个...