All right. So, let's look at this in another way, sometimes it's hard to picture these waves combining.

好的，让我们从另外一个方面来看，有时候很难想象这些波函数的组合。

麻省理工公开课 - 化学原理课程节选

Hard to imagine anybody doing this for more than a couple of hours.

很难想象谁能持续几个小时这样做

耶鲁公开课 - 古希腊历史简介课程节选

You can't think that it really could make so much difference in the real world how prices and quantitie and welfare, and profit is going to work out depending on some thought experiment about how I think about my strategy set.

你们很难想象在现实世界里,价格 产量 福利和利润会因为,不同策略集合设定下的思想实验,而产生如此巨大的变化

耶鲁公开课 - 博弈论课程节选

Now, one of the reasons why people would-- it's unthinkable for someone like me or for probably most of you to imagine giving up your rights to a kind of absolute rule, though we seem to be in a situation like that, where that's happened quite a lot recently, even in this own country.

我或者你们中绝大多数的人,很难想象会有这么多人,宁愿放弃自己的权利,而屈从于一种绝对王权的原因,尽管在我们国家,最近类似的事情层出不穷,让我们仿佛能够感同身受

耶鲁公开课 - 欧洲文明课程节选

Well, as Carl Sagan would have said, there are billions and billions of tests we would have to do. Or maybe it's billions and billions and billions. Pretty impractical.

好，就像Carl，Sagan，说过的，我们得做十亿个十亿测试,或者可能是十亿个十亿个十亿测试,很不切实际，很难想象出一个。

麻省理工公开课 - 计算机科学及编程导论课程节选

So essentially, each of these orbitals come from linear combinations of all of the original orbitals, and it's hard to picture exactly how that happens, but one that you can at least start to get an idea is if you think about combining the 2 s and the 2 p z here, which is not quite accurate because of course, we're combining all of them.

本质上，这些轨道每个都来,自原来所有轨道的线性组合，我们很难想象这是怎么发生的，但你们可以至少有个概念,如果你们考虑2s和2pz轨道的结合，这当然是不太准确的，因为我们要把所有的都组合起来。

麻省理工公开课 - 化学原理课程节选

You cannot imagine the great kings of Mycenae doing that.

我们很难想象迈锡尼的国王会务农

耶鲁公开课 - 古希腊历史简介课程节选

Hard to believe today, but Sicily was one of the major granaries of the Mediterranean world at that time, tremendously fruitful, able to grow the best possible crops, very good wheat and so on.

在今天很难想象,但西西里是当时地中海地区,最主要的粮仓之一,产物丰盛,能够种植最好的谷物,上乘的小麦等等

耶鲁公开课 - 古希腊历史简介课程节选