英语语法分析

Longevity is a key characteristic of a replicator.

长寿是复制器的一个关键特征。

To be a successful replicator, there are three key characteristics: longevity, fecundity and fidelity.

要成为一个成功的复制因子，有三个关键特征：寿命、繁殖能力和准确度。

A replicator must exist long enough to be able to get copied, and transfer its information.

复制因子必须存在足够久，才能被复制并传递信息。