The worst of it is that I can't even be sure if they received my letter.

最糟糕的是，我甚至不能确定他们是否收到了我的信。

What a pity it is that he can't continue his dream now!

现在他不能继续实现他的梦想了，真可惜！

It is that there are still couples who keep doing things to show each other love.

仍然有夫妻继续做一些事情来表达对彼此的爱。

It sends out the message how important it is that we believe in ourselves and never give up.

它传达出相信自己，永不放弃是何等重要。

It is that crying I heard before.

这是我之前听到的哭声。

I become fat, and it is that one wants to become!

我变胖了，这正是一个人想变成的样子！

How strange it is that the students are so quiet in the classroom!

真奇怪，学生们在教室里那么安静！

We need to understand what motivates people, what it is that allows them to make change.

我们要明白什么能激励人们，什么能让他们做出改变。

I think that the idea behind it is that they have created this really inexpensive laptop.

我认为这背后的想法是他们发明了这么便宜的笔记本电脑。

We need to understand what motivates people, what it is that allows them to make a change.

我们需要了解是什么激励着人们，是什么让他们做出改变。

It is not simply that one is interrupted; it is that one is actually inclined to interruption.

问题不仅仅是一个人被打断；而是一个人实际上倾向于被打断。

The question that puzzled them is how it is that they can get rid of the air pollution in the area.

让他们感到困惑的是他们怎样才能消除这个地区的空气污染。

It is that even to this day bears have short tails, hibernate all winter, and have no love at all for fox.

这就是为什么即使现在熊也只有短短的尾巴，整个冬天都冬眠，而且一点也不喜欢狐狸。

It is that Rockefeller Center, with the Christmas tree, ice rink, tourist hordes, and thousands of harried New Yorkers.

就是那个洛克菲勒中心，有圣诞树、溜冰场、成群游客和成千上万的纽约客。

So far, there has been no scientific consensus about what it is that includes the risk of eating genetically modified food.

到目前为止，科学界对于食用转基因食品究竟有哪些风险还没有达成共识。

If there is one lesson everybody should take away from the credit crunch, it is that central bankers, no less than dentists, are only human.

如果说有一个教训是每个人都应该从信贷危机中吸取的，那就是央行行长和牙医一样都是凡人。

The reality of it is that a lot of low-income kids could be going to elite universities on a full ride scholarship and don't even realize it.

现实情况是，很多低收入家庭的孩子可以拿着全额奖学金进入名牌大学，但他们自己却没有意识到。

Then a strong current of electrons follows that path from the cloud to the ground, and it is that current that illuminates the channel as the lightning we see.

然后一股强大的电子电流沿着这条路径，从云层到达地面，正是这种电流像我们看到的闪电一样照亮了通道。

We do not even know, for example, how many stars have planets, and we certainly do not know how likely it is that life will arise naturally, given the right conditions.

例如，我们甚至不知道有多少恒星有行星，我们当然也不知道如果有适当的条件，生命自然出现的可能性有多大。

A person's psychology is a subtle thing. How true it is that words are echoes of the heart.

人的心理真是奇妙，言为心声一点不假。

Believe me, it is that simple.

相信我，就是那么简单。

But it is that story, too.

但这也是故事的一部分。

Find out what it is that heals you.

搞清楚是何种力量治愈了你。

Yes, it is that simple!

是的就是这么简单！

Yes, it is that simple.

是的，非常简单。

My objection to it is that it stops the brain.

我反对它因为它是脑子停止思考。

It is that simple.

就这么简单。

How good it is that we may trust Him anyway!

我们若能完全信靠祂，这是何等美好的一件事呢？

If anything in physics is known for sure, it is that.

如果说物理学里面还有什么可以确信的，那就是它了！