博士告诉马蒂和詹妮弗，未来是不确定的，现在的努力决定着将来的收获，所以他们要靠自己来创造一个美好的未来。

Doc tells Marty and Jennifer that the future has not been written yet, and that it is "whatever you make it, so make it a good one."

youdao

当然，他们要知道他们自己的孩子将会发生什么事，但我不能告诉他们……我们不能预测未来，但我们可以让他们知道一些事情发生的概率。

Of course, they want to know what's going to happen to their child. But I can't tell them that... we can't predict the future but we can give them probabilities.

youdao