- The monkey isn't strong enough to crack the shell...
猴子不够强壮 无法砸碎蛤蜊壳 - but it's discovered that repeated hammering will tire the clam...
但它发现反复敲打会令蛤蜊疲惫 - until it finally opens.
直到蛤蜊最终张开 - Learning this lesson takes a large brain...
学会这一课需要巨大的脑部 - ...and coordination.
以及良好的协调能力 - This unique intelligence
这种独特的智慧 - allowed their primate ancestors to survive in the forest of 50 million years ago.
使它们的灵长类祖先 能够在5000万年前的森林中存活下来
Learning this lesson takes a large brain... 学会这一课需要巨大的脑部
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