We shall have to refine on our methods of advertising.

我们得进一步改进做广告的方法。

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The author is planning to refine on his work of five years ago.

作者打算把他5年前的著作修改得更完美些。

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After30 years, the mature author was able to refine on the work of his youth.

过去30年，这位作家已经成熟，他可以将年轻时候写的作品修改得更完美了。

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Virtually anyone who uses sketching to capture their creative ideas and wants to have their drawings in a digital format to e-mail, archive or further refine on their computer can benefit from Inkling.

ENGADGET: Wacom Inkling smart pen does drawing the old-fashioned way -- sort of (video)

The judge then gave the new administration an opportunity to refine the rules on appeals.

BBC: 'No US rights' for Bagram inmates

Texas Instruments credits him with helping that smorgasbord chipmaker further refine its focus on digital signal processors in 1997.

FORBES: The Art Of War