TED演讲：气味背后的科学(7)
时间：2018-12-19 作者：英语课 分类：TED演讲教育篇
英语课
However, I managed to get a hold of a Borane eventually, and here is the beast. 无论如何，我最终得到了一些硼烷，这就是那个“怪物”。
And it really does have the same -- if you calculate, if you measure the vibrational 1 frequencies, they are the same as S-H. 结果和我预期的一样--如果你计算，如果你计算振动频率，它的和S-H的一样。
Now, does it smell of sulfur 2? 现在，来看看它闻起来像不像硫？
Well, if you go back in the literature, there's a man who knew more about Boranes than anyone alive then or since, Alfred Stock, he synthesized all of them. 如果你去查文献，会发现有一个人比历史上任何人都更了解硼烷，阿尔弗雷德·斯托克，他用人工的方法合成过所有的硼烷类物质。
And in an enormous 40-page paper in German he says, at one point -- my wife is German and she translated it for me -- and at one point he says, 在他用德语写成的长达40页的论文中，他曾说，我太太是德国人她为我翻译了一下，他曾说，
"ganz widerlich Geruch," an "absolutely repulsive 3 smell," which is good. “ganz widerlich Geruch”意思就是“绝对令人厌恶的味道”，这很好。
Reminiscent of hydrogen sulfide. 让人想起硫化氢。
So this fact that Boranes smell of sulfur had been known since 1910, and utterly 4 forgotten until 1997, 1998. 硼烷闻起来像硫这一事实，自从1910年人们就知道了，但是却全然被大家遗忘了直到1997年、1998年。
Now, the slight fly in the ointment 5 is this: that if we smell molecular 6 vibrations 7, we must have a spectroscope in our nose. 现在唯一的不足就是如果我们闻到的是分子的震动，我们的鼻子里一定要有一个分光镜才行。
Now, this is a spectroscope, OK, on my laboratory bench. 这是一个分光镜，在我实验室的椅子上。
And it's fair to say that if you look up somebody's nose, you're unlikely to see anything resembling this. 可以这么说如果你观察一个人的鼻子内部，你不会看到任何类似这个的东西。
And this is the main objection to the theory. 这是反对这个理论的主要观点。
1 vibrational
adj.振动的，摇摆的
- However, heating energizes the vibrational, rotational, and electronic motions all at once. 但是，加热会一下子把振动、转动和电子运动统统加强。 来自英汉非文学 - 科技
- Such photons will excite the higher vibrational levels of the OH molecule. 这种光子会激发OH分子的较高振动能级。 来自辞典例句
2 sulfur
n.硫，硫磺（=sulphur）
- Sulfur emissions from steel mills become acid rain.炼钢厂排放出的硫形成了酸雨。
- Burning may produce sulfur oxides.燃烧可能会产生硫氧化物。
3 repulsive
adj.排斥的，使人反感的
- She found the idea deeply repulsive.她发现这个想法很恶心。
- The repulsive force within the nucleus is enormous.核子内部的斥力是巨大的。
4 utterly
adv.完全地，绝对地
- Utterly devoted to the people,he gave his life in saving his patients.他忠于人民，把毕生精力用于挽救患者的生命。
- I was utterly ravished by the way she smiled.她的微笑使我完全陶醉了。
5 ointment
n.药膏，油膏，软膏
- Your foot will feel better after the application of this ointment.敷用这药膏后，你的脚会感到舒服些。
- This herbal ointment will help to close up your wound quickly.这种中草药膏会帮助你的伤口很快愈合。
6 molecular
adj.分子的；克分子的
- The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
- For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。
7 vibrations
n.摆动( vibration的名词复数 )；震动；感受；（偏离平衡位置的）一次性往复振动
- We could feel the vibrations from the trucks passing outside. 我们可以感到外面卡车经过时的颤动。
- I am drawn to that girl; I get good vibrations from her. 我被那女孩吸引住了，她使我产生良好的感觉。 来自《简明英汉词典》
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