This "once in a lifetime" event actually may take place twice in some folks' lives.
这种“生平仅见”的事件实际上有可能在一些人的生活中发生两次。
Not only did she discover radium but also won the Nobel Prize twice in her lifetime.
她不仅发现了镭，她一生中还获得了两次诺贝尔奖。
First, if some nodes in your cell are left down for extended periods of time (likely twice the key lifetime), the nodes can lose the ability to communicate.
首先，如果计算单元中的某些节点在一段时间(比如密钥寿命的两倍)内一直停机，它们就会丧失通信能力。
Yet she knew that there was love in the child's heart, although it mostly revealed itself in passion, and hardly twice in her lifetime had been softened by such gentleness as now.
然而她明白，这孩子的心中是有着爱的，不过这种爱通常是以激情的形式来表达的；她生来恐怕还没有第二次这样温文尔雅呢。
It was a night of joy and terror, such as this man of stupendous emotions had already experienced twice or thrice in his lifetime.
这一夜是甜密的一夜，也是恐怖的一夜，正如这个感情强烈的人在过去的生活中已经经历过的那两三夜一样。
There are truly innumerable restaurants offering a vast selection of Chinese food in its every incarnation, you could feasibly never visit the same place twice in one lifetime.
这里有数不清的餐馆酒楼提供种类繁多的中国美食，如果想把他们都尝遍那可能要花上一辈子的时间呢。
There are truly innumerable restaurants offering a vast selection of Chinese food in its every incarnation, you could feasibly never visit the same place twice in one lifetime.
这里有数不清的餐馆酒楼提供种类繁多的中国美食，如果想把他们都尝遍那可能要花上一辈子的时间呢。
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