We have to decide on how long a life of the reactor core we want and by lifetime we mean the time from when we start the reactor to the time that we need to re-fuel.

我们需要决定反应堆核心的一期有多长，寿命，我们指的是，我们开始反应堆的时间到，我们需要换料的时间之间。

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Japanese companies provide lifetime employment for their core workers (accounting for about a third of the workforce), thereby creating strong worker loyalty.

日本公司为核心员工(占到劳动力的三分之一)提供终身雇佣，这创造出了强大的员工忠诚度。

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Only if they begin to build up a core of knowledge can they develop the habits of mental discipline that must last them a lifetime.

只有当他们开始营建起一个知识核心的时候，他们才能养成可惠及其一生的精神上的习惯。

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And at the core of this lifetime of business success are two critical innovation principles consistently applied, day in and day out, in real time, in the real world.

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Edward "Ted" Kennedy may have been 77 years old, but he embodied the spirit, determination and core values of my generation -- the millenials -- in a way that no other senator has in our lifetime.

CNN: Commentary: Ted Kennedy's causes resonate with youth