Mammals do have the ability to regulate their body temperature, but not all can do it to the same degree, or even the same way.

哺乳动物确实有调节它们体温的能力，但并不是所有哺乳动物都能做到同样的程度，或甚至以同样的方式调节体温。

"Wealth" in this sense is not money, for we do not live on money but on things that money can buy: "goods" such as food and clothing, and "services" such as transport and entertainment.

在这个意义上，“财富”并不是钱，因为我们不是靠钱生活，而是靠钱能买到的东西生活：对于“商品”，比如食物和衣服，对于“服务”，比如交通和娱乐。

It sounds arrogant, but it is the truth: I do not feel I have given out even part of what I can give out.

这听起来很自大，但这是事实：我觉得我没有付出我能付出的，哪怕一部分。

I will try and improve the handwriting, but there's not much I can do about the accent at this stage.

我会努力写好板书，但是口音暂时不太好改。

We have to explain that we can do all the work in the other jurisdictions but not in Brazil.

我们必须解释我们可以在其他管辖区域提供所有服务，但在巴西不行。

Many of us thrive on competition, but it can seep into areas of our lives where we do not want it.

我们许多人靠竞争而发展，但竞争也会逐渐侵入到我们生活中不需要它的一些方面。

As you only have a short stay in Shanghai, you probably will not be able to do much more sightseeing. But if I can help in any other way, please let me know.

由于您在上海只能做短暂停留，您可能无法做太多的观光。但如果我能在任何其它方面帮上您的忙，敬请告知我。

It sounds like you could do with an assistant but that's obviously not possible, so what about having an online system that students can use to do their scheduling?

听起来你需要一个助手，但这显然是不可能的，那如果有一个在线系统来帮助学生做他们的日程安排呢？

Many animals can harm me, but I do not harm them.

许多动物可能会伤害我，但我不伤害它们。

Perseverance is the simplest yet most difficult thing in the world, because everyone can do it, but not everyone will do.

坚持是世界上最简单也是最困难的事情，因为每个人都可以做到，但不是每个人都会做到。

This might not seem fair, but all people are different and how well you can do something is different to others.

这可能看起来不公平，但每个人都是不同的，你做某事的能力也不同于其他人。

They may not be well-known to the public, but they do what they can to help improve people's lives as well.

他们可能不为公众所知，但是也尽其所能地帮助改善人们的生活。

I do get real speaking roles, but work can be hard to come by if you're not a popular star.

我的确拿到了有台词的角色，但如果不是人气明星，可能很难拿到这份工作。

Hannah started to think about how she could help, but, of course, there is not a lot one five-year-old can do to solve the problem of homelessness.

汉娜开始思考她该如何能帮上忙，但显然一个五岁的孩子在解决无家可归的问题上能做的事情并不多。

But it's not a race, it's really just for fun and the best thing would be to take it easy the first few times you do it and then see if you can gradually improve your time.

但这不是一场比赛，真的只是为了好玩，最好是在刚开始的几次比赛中放松一些，然后看看你是否能在时间上逐渐提升。

Ask not what the blogosphere can do for you but what together we can do for the blogosphere.

不要问博客圈能为我们做什么，问问我们能一起为博客圈做什么。

You can do anything you want, but not everything at the same time.

你可以完成你想要做的任何事，但你不可能同时完成所有的事。

You can name the constraint, but you do not have to.

您可以命名约束，但这不是必须的。

I can still do it, but I'm not quite as invested in it.

我现在仍然可以做到这一点，但我对它不能太投入了。

But you can do things like not smoking.

但你可以做一些类似于不吸烟等事来达到效果。

You may give intellectual assent to what God can do but unless you take the first step, you do not have faith.

你虽然理性上知道神能做到一件事，但只有迈出了信心的第一步，你才是真信了。

It's not necessary to do that, but it can be quite convenient.

虽然没有必要这样做，但是这样做是很方便的。

This is not to say that you can't define more granular protections using roles; you can, but frequently it is not effective to do so.

这并不是说无法使用角色定义更细粒度的保护，但这样做的效果通常不好。

Another ally can do this but not that.

另一个盟国能这样、又不能那样做。

Not only can you use tools and libraries to do this, but you almost always should.

您不但可以使用工具和库来实现这种功能，而且应该始终这样做。

But do not believe you can have both.

但不相信你可以二者得兼。

It's not easy. But you can learn to do it.

这些并不容易，但是你可以去学习着去做。

A few of us can, but evolution did not build us to do this for very long.

我们当中许多人能做到这一点，但是，进化没有培养我们长期这么做。

UNIX is a treasure chest of tools with which you can not only do productive work but also educate and entertain yourself as you explore the depths of the operating system.

UNIX是一个工具财宝箱，有了这些工具，您不仅可以完成具有创造性的工作，还可以在深入研究该操作系统的同时得到教育和娱乐。