知识是后天获得的，不是先天就有的。

Knowledge is acquired, not innate.

《新英汉大辞典》

起码，这是一种后天获得的认知技能。

At the very least, it's an acquired cognitive skill.

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忍耐是你后天获得的智慧，而智慧是经验的孩子。

Patience is acquired as you acquire wisdom, and wisdom is the child of experience.

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但也有些人，比如你，是后天获得的。

Some, like you, gain them later in life.

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人体的免疫功能分为先天和后天(获得)免疫。

Immune function is divided into natural immune and acquired immune.

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人体的免疫功能分为先天和后天(获得)免疫。

Immune function is divided into natural immune and acquired immune.

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