我们担心电网会崩溃、不可再生资源会枯竭、沙漠会扩张、岛屿会消失、空气和水会受到污染。

We fear the breakdown of the electric grid, the end of non-renewable resources, the expansion of deserts, the loss of islands, and the pollution of our air and water.

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她说：“我相信，我们能够开出药方，让切断的脊髓愈合、心脏再生、失去的四肢再生的那一天不远了。”

She says: "I believe that the day is not far off when we will be able to prescribe drugs that cause severed spinal cords to heal, hearts to regenerate and lost limbs to regrow."

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“我们不再生产任何东西了。”他告诉福克斯新闻，同时为自己在墨西哥的服装生产线辩护。

"We don't make anything anymore," he told Fox News, while defending his own made-in-Mexico clothing line.

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So we needed to come up with another source, a renewable source, so we turned our attention to embryonic stem cells.

因此，我们需要一种替代材料，一种可以再生的材料，我们注意到了胚胎干细胞胚胎干细胞。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

We'll talk in a minute about stem cells that are involved in generation of blood and they develop and they live in the bone marrow.

我们一会儿要说到,和血细胞再生有关的干细胞,它们发育并储存在骨髓中

耶鲁公开课 - 生物医学工程探索课程节选