My mobile phone is extremely useful.
我的手机极为有用。
Overall, this is a very useful book.
总的来说，这是一本很有用的书。
This information could prove useful.
这条信息往后也许有用。
In business a poker face can be very useful.
在生意场上，不露声色会非常有用的。
The research has yielded useful information.
这项研究提供了有用的资料。
The pressure cooker is very useful for people who go out all day.
压力锅对整天外出的人非常有用。
It can be useful to write a short summary of your argument first.
先把你的论点纲要写下来可能会有帮助。
It was certainly useful to have her there to chauffeur him around.
有她在那儿为他开车肯定是有用的。
It would be useful if you could nail down the source of this tension.
如果你能弄清这种紧张情绪的根源，会是有用的。
I hope at least my daughter was able to offer you some useful pointers.
我希望至少我女儿能够给你提供一些有用的线索。
Painkillers are very useful in small amounts to bring your temperature down.
小剂量的止痛药对于降低体温非常有用。
她的包既可爱又实用。
Fear is both useful and harmful.
恐惧既有益也有害。
以下是四种有用的方法。
How useful do you think they are?
你认为它们的帮助大吗？
电脑是非常有用的。
Is learning English really useful?
学英语真的有用吗？
Garlic is very useful for your beauty.
大蒜对您的美丽是非常有用的。
What useful packages it would come in!
它会装在多么有用的包裹里啊！
There, The Three Rules is less useful.
在那里，《三项规定》就没那么有用了。
狗是非常有用的。
它们非常有用。
You need to know some useful information.
你需要知道一些有用的信息。
This accident affords us a useful lesson.
这个事故为我们提供了有益的教训。
"They provide a useful service," said Flack.
弗拉克说：“他们提供有用的服务。”
He studied something useful about the place.
他研究了一些关于这个地方有用的东西。
他是个很棒的运动员。
我们也许用得上他。
Having your own computer is very useful.
自己有一台计算机用处很大。
These experiments serve no useful purpose.
这些实验没有任何实际意义。
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