What's happening there? Well, the selection of reactants has been done judiciously to provide either heat or to provide something that's cool.
就会感到这东西,比如说变冷了,对吧?,这里发生了什么?这些反应物都是,被仔细的选出来的,能够提供热量或制冷。
So, let's move to our first situation where you could use a "Can" question.
那么,让我们来看看能够使用“Can”问句的第一种语境吧!
The Taylor rule specifies specific variables and everybody at the markets would understand the rule, ? and that's correct, right?
像泰勒规则就明确了具体的变量,市场中每一个参与者也都能够理解,这个没错吧?
the Dead Sea Scrolls.] And some of them date back to the fourth and third century .So do you understand now why everybody was so excited?
其中一些文卷甚至能够追溯到公元前,三四世纪,所以你们应该明白为什么这么令人兴奋了吧!
So if I start off with a list of length n, how many times can I divide it by 2, until I get to something no more than two left?
我能够除以多少次2呢?,直到我得到的长度不超过2么?,对数次,对吧?就像刚才那位同学说的那样?
I started by saying, "Could you come up with any kind of-- well,you tell me in fifty words or less what I said in lecture yesterday about harmony.
我是这样开头的,你们能够想起任何-,好吧,你们用五十个以内单词告诉我在昨天的课上我就和声问题说了些什么。
They can't sell them to get money so the Fed is saying fine we'll just take those and we'll give you Treasury bills which are completely everyone trusts them.
他们不能够卖掉资产来获取金钱,所以美联储说,好吧,我们拿走你的资产,给你完整的国库券,每个人都相信他们。
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