The response was tough but useful.
得到的回答虽然很粗俗，但很有用。
Necessary? No, but useful? Yes.
有必要吗？没有，但有用吗？
这是非常容易的，但有益的。
它是简单但很有用。
This paper introduced a simple but useful system for measuring large size.
介绍一种简单而又实用的大尺寸测量系统。
Algebra is not easy for everyone to learn, but it is very useful.
代数对每个人来说都不容易学，但它非常有用。
Marking a book is a useful skill, but it's important to do it right.
在书上做标记是一项有用的技能，但重要的是要做对。
But this might not always be useful.
但是此方法并非始终有用。
Large page is useful but it should be used in specific scenarios.
大页面是有用的，但是只应该在特定的场景中使用。
So, yes, even this is an "advertisement, " but hopefully, it's also useful content.
所以，没错，即使这篇文章是一个广告，但希望它也是有用的内容。
They are by no means the only possible types, but they represent one useful approach.
它们绝非唯一可能的类型，但它们表达了一种有用的方法。
Useful advice, but zombies were far from anyone’s mind.
尽管建议很有用，但是有谁会相信僵尸存在呢？
This can be very useful, but it is not needed in this case.
此属性会非常有用，但是在本例中不需要它。
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。
It might be very useful. But now it is gone.
——或许很有用吧，但是现在文件已经没有了。
These are fun but are they really useful?
这些看上去很有趣但它们是不是有用呢？
Useful advice, but zombies were far from anyone's mind.
尽管建议很有用，但是有谁会相信僵尸存在呢？
This information is quite useful but has never been available to other applications.
这些信息非常有用，但是决不会被其他应用程序获得。
These two tools are rather simple, but can be extremely useful.
这两个工具都非常简单，但又可能极为有用。
This function is very useful, but also very badly named.
这个函数十分有用，但是它的命名非常糟糕。
These alerts provide useful data, but require further analysis by real humans.
这些警告提供有用的数据，但是需要采用人工进一步分析。
A useful one, but a tool nonetheless.
一个有用的工具，仅此而已。
The identification is certainly useful, but you do not need namespaces to achieve that.
这一证明当然很有用，但并不一定要用名称空间来获得。
We could, of course, distinguish finer-grained responsibilities, but this is rarely useful.
当然，我们能够识别出细粒度的职责，但这很少有用。
Rules of thumb are useful, but one should never be afraid tobreak them.
经验是有用的，但是不要惧怕打破既有的经验。
Search has always been useful, but now it's vital.
搜索引擎一直都有用，但现在，它变得至关重要。
Search has always been useful, but now it's vital.
搜索引擎一直都有用，但现在，它变得至关重要。
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