Amy's father looks after two elephants in the zoo.

艾米的爸爸在动物园里照看两只大象。

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Inside are tiny "springs" made of carbon nanotubes - minuscule hair-like filaments - that can "sense" pressure from a slight pinch up to the equivalent of two elephants stepping on top of the sensor.

传感器内部是由碳纳米管制成的微型“弹簧”——非常细小，像头发丝一样——能够感知不同的压力，小到轻轻地捏一下，大到相当于两头大象站在顶上。

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It will take two elephants to drag all this wood away.

需要两头大象才能把所有的木材拖走。

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Finally, the elephant stables, 12 chambers that would have fit two elephants each, now stand empty and silent.

BBC: Escape from Goa: Hampi and the ruins of Vijayanagara

There were once hundreds of elephants roaming this area, but hunting and deforestation have almost wiped out the population, with as few as one or two elephants remaining in the wild.

BBC: Step back in time in South Africa��s Garden Route

The two elephants have been suffering from tuberculosis, and the city authorities have insisted that they should be put to sleep as they pose a threat to other animals in the zoo and its visitors.

FORBES: Connect