For knowing that would require anunderstanding of what knowing is, in order to be sure that one lacked it.

要知道自己无知，需要理解什么是“知道”，这样才有可能确认某人缺乏它。

youdao

But the nasty question then surfaced: what is the objective of this operation? Washington's crusaders lacked a cogent answer.

但是令人不爽的问题浮现出来：这次袭击的目标是什么？华盛顿的十字军们缺乏一个令人信服的回答。

youdao

Having never had any money, I never acquired the habit of it, and the result is that I have never lacked it; but, if I had been rich, there would have been no more poor people!

我从来不曾有过钱，也没有找钱的习惯，因此我也从来不缺钱，但是，要是我有钱的话，世界上就不会再有穷苦人！

youdao

While New Orleans may have lacked in the diversity of ethnic restaurants, what is certain is that the city never lacked in internationally trained culinary talent.

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This is a major disappointment, for while the Flips lacked some of the features of other portable HD cameras (such as an input jack for an external mic and 1080p resolution) the color quality was much better than most.

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It is striking how he lacked the skills to critically question his sources of information for veracity and to filter and relate facts, arguments and interpretations.

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