In the last class, we started talking about useful plant fibers.
上节课，我们开始讨论有用的植物纤维。
We fill this jar with useful things, like money.
我们会在罐子里放一些有用的东西，比如钱。
Few of us wish to turn the clock back, but perhaps we need to remind ourselves how useful the right obstacles can be.
很少有人希望时光倒流，但或许我们需要提醒自己，适当的障碍是多么有用。
Anything that can increase farming efficiency—the amount of crops we can produce per acre of land—will be extremely useful.
任何能提高农业效率的东西——能提高我们每英亩土地生产的农作物数量的东西——都是非常有用的。
This is extremely useful, because there are objects that can't be seen, objects that we wouldn't even know without radio telescopes.
这是非常有用的，因为有些物体是看不见的，如果没有射电望远镜我们甚至不知道这些物体。
According to the Centre for Strategic and International Studies, about three quarters of energy we use to move things, including ourselves, accomplish no useful work.
根据战略与国际研究中心的数据，我们用于移动包括我们自己的物体的能量中，约有四分之三没有完成任何有用的工作。
This meeting has been, without doubt, one of the most useful we have had so far.
这无疑是我们迄今为止最有用的一次会议。
According to the Center for Strategic and International Studies, about three quarters of the energy we use to move things, including ourselves, accomplishes no useful work.
战略与国际研究中心表示，包括我们自己在内，我们用来移动事物的能量中，约有四分之三的能量没有产生有用功。
We want to hear from him and from other partners in the region what would be useful to help them.
我们希望从他和该地区其他伙伴那里听到对帮助他们有用的信息。
We get useful materials from it.
我们从中得到有用的材料。
We find it more useful for students to do new eye exercises.
我们发现学生做新的眼保健操更有用。
We teenagers should aim at contributing something useful to the society.
我们青年人应该以为社会做贡献为目标。
Today I would like to introduce some simple but useful ways that we can follow easily in our daily life.
今天我想介绍一些简单但有用的方法，这些方法是我们在日常生活中非常容易遵循的。
By learning a foreign language, we not only have a useful tool of communicating, but experience a new culture, what's more important, learning a foreign language well will help us tell our own stories to the world.
通过学习一门外语，我们不仅获得一个有用的交流工具，还能体验一种新的文化，更重要的是，学好一门外语将帮助我们向世界讲述自己的故事。
Because the number of possible topics is practically limitless, we focus on a sample of the most interesting and useful applications and tools and explain the basic principles of technology.
因为可能的主题在数量上几乎是无限的，所以我们重点关注最有趣和最有用的应用程序和工具的一个示例，并解释技术的基本原理。
We may find it useful in future.; It may come in handy someday.
这东西日后可能用得着。
We believe this to be a very useful suggestion.
我们认为，这是一项非常有益的建议。
We hope that you find it useful.
我们希望您会发现它有用。
In this example, we show two useful styles.
在本例中，我们说明两种有用的样式。
Storing data is very useful, but often, we want to get some information back.
存储数据非常有用，但我们往往想要获得一些反馈信息。
Know of other mobile activist campaigns or useful mobile apps we should know about?
你还知道其它我们应该了解的手机行动主义活动或有用的手机应用吗？
But what makes OK so useful that we incorporate it into so many conversations?
但为什么OK能这么有用，让我们在这么多对话中能用上？
At least we might get more useful spam.
至少我们会得到更多有用的广告信息。
In this chapter we provided some useful analogies for understanding the fractal nature of SOA.
在这一章里，我们提供了一些理解SOA不确定实质的有用参考。
In this chapter we provided some useful analogies for understanding the fractal nature of SOA.
在这一章里，我们提供了一些理解SOA不确定实质的有用参考。
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