他的皮肤被涂上了一层油脂和松香制成的混合物，并浸泡在一种泡碱溶液里。这种泡碱是在埃及干涸的河床上发现的一种矿盐。

His skin was covered in a mixture of oils and resins and bathed in a solution of Natron, a salt found in dried-up river beds in Egypt.

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虽然有很高的毒性，但这种植物也是有好处的，莨宕碱和东莨菪碱等化学制剂都从中萃取。

While this is a highly toxic plant, it also has its benefits. The medical alkaloids atropine, scopolamine, hyoscyamine, hyoscine, and belladonna also come from this plant.

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尽管巧克力中的可可碱含量很小，不足以造成失眠健康问题，但是因可可碱引起人体中毒的风险还是有的，尤其是老年人对此要更加留心。

While the amount of theobromine in chocolate is generally small enough not to cause a problem, there is always the risk of theobromine poisoning—especially in elderly people.

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Often it's a salt called phosphocholine and so you get a phospholipid that's made of choline and two lipid chains.

它通常是一种叫磷酸胆碱的盐,这样你就得到了一种,由胆碱和两条脂肪链构成的磷脂

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The native structure is this double stranded structure here and if I heat it up slightly and I add some base, so under slightly basic conditions, these molecules will fall apart because you've created conditions where the hydrogen bonding is no longer favorable so they peel apart.

原始结构,在这里就是指DNA双链,如果我稍微加热,并且加入一些碱,在弱碱性的条件下,这些配对碱基会分开,这是因为在一定条件下,碱基对之间的氢键,不再稳定并且会断裂分开

耶鲁公开课 - 生物医学工程探索课程节选