It is a human instinct to make friends for we want to share our joy and sorrow.

交朋友是人类本能，因为我们想分享欢乐和悲伤。

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It is apparently a strong human instinct: we all treasure our children; we love and protect them instinctively.

很显然这是一种至深的人类与生俱来的天性：我们全都珍爱我们的孩子，我们本能地爱他们，保护他们。

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Whether it is strong enough to overcome the age-old human instinct that swamps are there to be drained remains to be seen.

至于是否强大到足以克服古老的将湿地排干的人类的本能，仍有待观察。

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Following any loss, the overwhelming human instinct is to try to rebuild.

FORBES: Margaret Thatcher (1925-2013): A Personal Encounter

Every human instinct, every impulse, would tell a person to turn away.

WHITEHOUSE: President Obama Awards Medal of Honor to Korean War Heroes

It's simply the human instinct to seek links and fill in the details of a plausible story to make it whole and coherent.

BBC: Go Figure: Are we related?