On October 26, 1985, Doc Brown arrives from the future and tells Marty McFly and his girlfriend Jennifer Parker that he needs their help to save their kids in the future.

1985年10月26日，布朗博士从未来回到现在，他告诉马蒂·麦克·弗莱和其女友詹妮弗·帕克，他需要两人的帮助去拯救他们在未来的孩子。

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To make matters worse, Marty did not bring back any additional plutonium to power the time machine, so he must find the 1955 version of Doc Brown to help him return to 1985.

更糟糕的是，马蒂没有多余的钚原料来驱动时光机，因此，他必须找到1955年的布朗博士帮助他回到1985年。

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In 1955, Marty McFly and Doc Brown use the information in Doc's 1885 letter to retrieve and repair the damaged DeLorean (which has been waiting for him in a mineshaft for 70 years).

在1955年，马蒂·麦克·弗莱和布朗博士按照博士于1885年寄出的信里的说明，找回并修好了损坏的德罗宁时光机(这辆跑车已在矿井里保存了70年)。

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" He said that kids wouldn't like someone named "Professor, " so let's change it to "Doc Brown.

CNN: Going 'Back to the Future,' 25 years later

Not possessing Doc Brown's DeLorean time traveler, we'll have to use our brains and instincts to discover the answers.

FORBES: Magazine Article

Let's fire up Doc Brown's DeLorean time-traveler and return to 1976.

FORBES: Predicting the Future: Part II