Prevents the problem re-occuring.

预防问题的重复发生。

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Here's what a naturally-occuring noctilucent cloud looks like, for comparison

以下可以对比自然形成的夜光云看起来来是怎样的

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There is a major shift occuring in the workforce and women are at the center of it.

劳动力正在发生重大改变，女性将成为其核心。

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Ricin, which is derived from castor beans, is a highly toxic naturally occuring protein.

FORBES: Is Ricin An Effective Biological Terror Agent?

Anyone can see the transactions occuring and the coin being created in real time via services like blockchain.info.

FORBES: Bitcoin: Whatever It Is, It's Not Money!

With that occuring and the modern social media boom, Italy and serie a have found themselves on the outside.

FORBES: No European Renaissance In Sight For Italy's Deteriorating Serie A