Don't lie: if the conversation drifts to a topic you're not knowledgeable about, admit you don't know the answer and then explain how you would go about finding a solution.

不要撒谎：如果谈话转到一个你不了解的话题，承认不知道答案；然后解释你将如何去寻找解决办法。

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Secretary Gates said he was not knowledgeable about the Vice President expressing that opinion.

WHITEHOUSE: Press Briefing by Deputy Press Secretary Bill Burton

Pensions accept what they are told by managers, in part because they are not knowledgeable about brokerage practices.

FORBES: Pensions and Brokerage: The Brokerage Battlefield Revisited (October 1, 2000)

That is, fiduciaries with responsibility for the plans are not knowledgeable, do not commit enough resources to these plans and indeed are not financially motivated to use their best efforts.

FORBES: An Extreme Makeover Due For Defined Contribution Plans: 401(k), 403(b) and 457s All Under Attack (June 1, 2007)