For the moment,the 3D sets come with one pair of glasses.
VOA: standard.2010.03.11
And if we put that in our bond here, we have 1, 2, 3 bonds, plus we have one lone pair left over.
如果我们把它们放到键里,我们有1,2,3个键,还剩下一对孤对在这里。
Seriously, I only have one pair of shoes because I only have one pair of feet.
说实话,我就只有一双鞋,因为我只有两只穿鞋的脚。
So if we take a look at nitrogen here, what you'll notice is we have thre available for bonding, - and we already have our lone pair -- one of our orbitals is already filled up.
如果我们看一下氮原子,我们注意到我们可以成3个键,我们已经有一个孤对-,其中的一个轨道已经被填满了。
Because you know the energy of one pair.
因为你们知道一对的能量。
One of the things about these plasmids that makes them very useful is that their entire base pair sequences is known.
质粒之所以有用,其中一个原因就是,它的全部碱基序列都是已知的
Why don't we give Philip both the matching pair and give you each a pair of socks since he didn't get to wear this one, they are brand new, in fact, and a big round of applause for what I'm sure is a little difficult.
我们为什么不给飞利浦一双配对的袜子,给你们每人一双袜子,他还没穿这双袜子,所以这双还算是全新的,再次以热烈的掌声对他们表示感谢,这样的模仿还是有一些难度的。
and they bought every single one of these guests a pair of new shoes for a party favor.
而且他们给每个参加聚会的人买了一双新鞋。
But then I ask them to think, and in the book I ask the readers to think: Well, have you given a cost of an expensive pair of shoes to save the life of one of the around 9 million children who are dying from poverty related causes each year around the world?
但是,接着我让他们思考,在书中,我让读者思考这样一个问题:,你有没有捐出过买一双鞋的钱,来拯救900万儿童中的一个生命?,他可能正因为贫困导致的种种问题,而生命垂危,每年世界上都会有这样的儿童?
A little while ago there was a sniper, actually a pair of snipers killing people in Washington and the one thing everybody knew about it was there was a white van involved.
几年前出现了一个狙击手,确切地说,是一对狙手在华盛顿作案,大家都知道的一件事是,作案过程中有一辆白色小货车。
That's what we call when we have three bonding atoms and one lone pair.
这是当我们有3个成键电子,和一个孤对时这样称它。
So if we still have an angle of a 109 . 5 degrees, and again, we still have four unpaired electrons available for bonding, we can make one of those bonds with another s p 3 hybridized carbon, so we're going to make up one pair here.
如果键角仍然是109。,同样,我们还有4个未配对的电子可以用来成键,我们可以用其中的一个,和另外一个sp3杂化碳原子成键,这样我们可以组成一对。
One plus one and then an ion pair grabs another one, another one.
加,接下来一对吸引另一对,再一对。
Well one way you could do it is by saying 'if I have this one base pair difference then this sequence is going to be cut by a specific restriction enzyme that recognizes the sequence CTGAGGA'.
一种方法是通过考虑,"如果我有这个不同的碱基对,那该序列必然会,被特定的限制酶识别并切割,这个特定的限制酶能识别,CTGAGGA "
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