like a once in a lifetime
就像一生只有一次
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Orcas rarely breach, so a perfect shot like this one is virtually a once-in-a-lifetime opportunity.
逆戟鲸几乎不跃出水面，所以这样一个完美的镜头抓住了那一个千载难逢的机会。
youdao
Are these stocks again once-in-a-lifetime deals that John Templeton would grab, like they were in the late 1970s?
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