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汽车很有用
Qìchē hěn yǒuyòng
Cars are useful
这个想法真正有用吗？
zhè gè xiǎng fǎ zhēn zhèng yǒu yòng ma？
This idea is useful?
这本书没有用
Zhè běn shū méiyǒu yòng
This book is not useful
学科技很有用
xué kē jì hěn yǒu yòng
Learning technology is very useful.
网站很好用
wǎng zhàn hěn hǎo yòng
The website is very useful
这项技术很有用
zhè xiàng jì shù hěn yǒu yòng
This technology is very useful.
我希望你觉得这本书有用
Wǒ xīwàng nǐ juédé zhè běn shū yǒuyòng
I hope you find the book useful
我们可以在这个网站上找到很多有用的信息。
wǒ men kě yǐ zài zhè ge wǎng zhàn shàng zhǎo dào Hěn duō yǒu yòng de xìn xī。
We can find a lot of useful information on this website.