I know a little about nature and hardly anything about men.

我对大自然有一点了解,但对人类几乎无一所知.

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They know a little about physics.

他们了解一点点物理.

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We know a little about the event.

我们对这件事多少知道一点.

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I know a little about acupuncture and massage.

病人:关于针灸和按摩,我略知一二.

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I indeed know a little about it.

我仅略知一二.

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