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。
It is very useful and will be widely used in the future.
这非常有用，将在未来得到广泛的应用。
For me, it is very useful and practical.
对我来说，这是非常有益的和实际的。
It is very useful to learn English well.
学好英语非常有用。
它非常有用。
It is very useful for the younger children.
这是非常有用的为年幼的儿童。
It is very useful when you are browsing the net.
这是非常有用的，当您在浏览网。
I like self — studying I think it is very useful.
我喜爱自我学习我认为这是非常有用的。
They point out that it is very useful in our life.
他们指出手机在我们的生活中很有用处。
I study English hard, because I know it is very useful.
我学习英语很努力，因为我知道它很有用。
It is very useful for the web designers and flash fans.
这是非常有益的网页设计师和闪存的球迷。
It is very useful oil specially used for sensitive skin.
这是非常有用的石油专门用于敏感皮肤。
Thank your for you suggestion. It is very useful for us.
谢谢你的建议，他对我们非常有用。
Thank your for your suggestion. It is very useful for us.
谢谢你的建议，他对非常有用。
It is very useful to recite English sentences and passages.
背诵英语句子和短文非常有用。
It is very useful to recite English sentences and passages.
背诵英语句子以及短文非常有用。
It is very useful even if you don't have any scheduled events.
这是非常有用的，即使你没有任何安排日程。
Neil: Yes, it is very useful but we'll just have to finish there.
是的，非常有用，但是我们要在这里结束了。
It is very useful to sit down with pencil and paper at this point.
这种情况下，好好拿了纸笔坐下来是挺有用的。
Because it is very useful, especially when China has joined the WTO.
学一门双学位非常有用，尤其是在中国加入WTO之后。
I like English too, but I like the computer class best. It is very useful.
我也喜欢英语，但我最喜欢电脑，电脑很有用。
If you want to make a map of your city by yourself, it is very useful for you.
如果你想使自己你的城市地图，它是非常有用的。
When selecting computer hardware, it is very useful to remember a few principles.
在选择计算机硬件的时候，记住几条原则是很有帮助的。
It is very useful for Pisces to live at the seaside and go in for music and poetry.
这是非常有用的双鱼座居住在海边和去的音乐和诗歌。
For example, our class set up a recycling center beside the back door, it is very useful.
例如，我们班建立一个循环中心的后门，它是非常有用的。
As mentioned earlier, it is very useful to mash data from different sources into one feed.
正如前面提到的，把来自不同数据源的数据组合为一个feed是非常有意义的。
It is very useful to carry out the research of high-quality long-lasting phosphorescent glasses.
深入开展高性能长余辉玻璃的研究和应用开发具有重要的意义。
But unknown to many, it has been recently discovered that it is very useful in oral care as well.
但是，许多未知的，它最近已经发现，这是非常有益的口腔护理以及。
But unknown to many, it has been recently discovered that it is very useful in oral care as well.
但是，许多未知的，它最近已经发现，这是非常有益的口腔护理以及。
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