VOA慢速英语:Some Websites Judge You by the Kind of Computer You Use

短语讲解：

1. This kind of price discrimination is also known as dynamic pricing.

known as 被认为是,被称为
例句：The function n(x, y)is known as the refractive index profile. 
函数n（x，y）称为折射率分布。 

2.  And I guarantee it is not the same, the same dollars that you paid for yours.

pay for 付款
例句：But however am I to pay for such a thing as this? 
可是这么一件东西叫我怎样付款呢？

3. He says the Internet has increased the amount of data that companies can collect.

amount of 大量
例句：To someone who doesn’t like tennis, any amount of the sport is tedious effort. 
对于那些不喜欢网球的人来说，大量运动是一种枯燥无味的努力。

4. The people that you deal with you online can’t see you at all physically.

deal with 交易;应付;处理
例句：He has learnt to deal properly with all kinds of complicated situations.
他已学会恰当地应付各种复杂局面。

5. But they know that, for instance, when you came to Orbitz you may have been directed there by Kayak, which is itself a comparison site, which then may lead Orbitz to believe that you’re searching for deals."

for instance 例如
例句：You can't depend on her: for instance, she arrived late yesterday.
她靠不住:举例说,昨天她就来迟了。