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。
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。
I think it's very useful. It may not be immediately apparent to people in Darfur, but in the end it is a contribution towards a solution to their problem."
VOA: standard.2009.10.23
This probably is not because use of eating utensils is human nature, but rather, it's because it's just a very useful thing that cultures discover over and over again.
之所以都用餐具,并不是因为使用餐具是人类本性,而是因为,所有文化都不断发现,餐具非常的实用
English is a very good language to learn and it's very useful,
英语是一门值得学习的语言,它非常地实用,
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