Or on his own instinctive cries, like a gulp of surprise at the sight of falling water or a yelp of effort caused by smashing a rock into a skull.

要么基于他自己本能的喊叫，像是看到降水时惊奇地吞咽口水的声音，或是把岩石敲进头骨，使劲叫喊的声音。

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early homo, they say, might have based his first words either on the noises he heard, like the splash of falling water or the thud of a rock smashing into a skull;

他们声称，早期人类的第一个词也许要么基于他所听到的噪音，像是溅水的声音，或者岩石敲击头骨的声音；

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In a final pair of experiments, the scientists tested metaphors like "hard-hearted" and "she's a rock" by first having people touch either a wooden block or a soft blanket as part of a magic trick.

在最后一组实验中，科学家测试诸如“铁石心肠”、“她像块石头”这类比喻。首先，作为魔术的一部分，人们先是触摸一个木块或是一张柔软的毯子。

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When I was there, you did not have to search hard to see priceless ancient etchings in the rock of the valley, or find sites like Butkara, just outside Mingora, built as a Buddhist monastery.

BBC: Remembering Swat's peaceful past

These range from power attacks for warriors (such as slamming the earth and sending huge pillars of rock into your foes) or more traditional spells like fireballs and lightning.

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In the long run, healthy habits are more likely to make your teen feel like a rock star than a quick can of his or her favorite energy drink.

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