我们可以想象比较一下钾离子，与钠离子，它们都同样带有正一价的电荷。
So we could think about comparing the potassium ion to a sodium ion. They have the same charge of plus one.
其中有一个非常重要的地方需要注意，不是硼，而是正一价硼离子，因为我们已经拿走了一个电子了。
so it's important to note that it's not in b, now we're talking about b plus, because we've already taken an electron out here.
这是一张对比图，展示某些离子与它们的母体，比如，这里是锂，大家可以看到正一价锂离子是多么的小，与中性锂原子相比。
And this is just a picture showing some of these sizes with their parent. So, for example, a lithium here, you can see how lithium plus is smaller than the actual lithium atom in its neutral state.
那么让我们来想一想，拿走一个，2,s，电子所消耗的能量，假设一个是从正一价硼离子中拿走1，另一个是从中性硼原子中拿走。
So let's think about the energy required now to remove a 2 s electron, let's say we're removing it from boron plus 1 versus neutral boron.
这里是正价的产品，房间角落的那张桌子上有一些打折的。
The regular-priced ones are here, and on that table in the corner of the room we have some on discount.
正山小种口味不一，口味与色泽不一样价也就不同，它目前在福建的市场售价300-800不等。
Tastes differ is mountain, taste is small and colour and lustre is not the same price is different also, it currently in fujian's market price of 300 to 800 dollars.
我们正借着奥运会从老外身上赚大钱呢，要是不想和他们出一个价，你们就过仨礼拜再来吧。
'we are making too much money off the foreigners because of the Olympics. Unless you want to pay foreigners' prices, come back in three weeks.
凭此优惠劵购物满港币$200或以上（以正价货品），可作HK$20使用，及可成为ELLA会员，于日后购物可享有九折优惠，会藉为期一年。
Present this coupon to enjoy HK$20 off upon purchase of HK$200 or above and a membership at ELLA will be granted and valid for one year. (Members can enjoy 10% discount on every purchase. )
凭此优惠劵购物满港币$200或以上（以正价货品），可作HK$20使用，及可成为ELLA会员，于日后购物可享有九折优惠，会藉为期一年。
Present this coupon to enjoy HK$20 off upon purchase of HK$200 or above and a membership at ELLA will be granted and valid for one year. (Members can enjoy 10% discount on every purchase. )
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