I agree with Harold that they can be quite useful.

我同意Harold的观点，处理指令可能非常有用。

youdao

Many of these behaviorist techniques have proven to be quite useful.

许多行为主义者所提出的技术，都被证明是非常有效的。

youdao

Web apps and extensions can be quite useful and in the case today, enhance your productivity.

现在网页应用和扩展可以变得十分有用，尤其适用于用来提升您的工作效率。

youdao

Many of these behaviorist techniques have proven to be quite useful.

许多行为主义者所提出的技术,都被证明是非常有效的。

耶鲁公开课 - 心理学导论课程节选

For people who are constantly taking notes, the digital pen could be quite useful.

FORBES: Connect

This technique does not always work, but sometimes it can be quite useful.

FORBES: A123 Batteries and How Some View Insider Trading As A 'Signal'

Translation from Japanese also is possible, so DOCOMO expects the app to be quite useful for foreign people visiting Japan.

ENGADGET: NTT DoCoMo preps automatic translation from Japanese through Android, leaves no one an island