石墨烯最早在2004年诞生于一个实验室，本质上是一层由纯碳原子组成的蜂窝状晶格层，薄到竟被认为是二维物质。

First produced in a lab back in 2004, graphene is essentially a single layer of pure carbon atoms bonded together in a honeycomb lattice so thin it's actually considered two-dimensional.

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在2008年和2009年，科学家们担心那个记录——薄北极冰盖可能全部融化。

In 2008 and 2009, scientists feared the record-thin Arctic ice cover might melt away.

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然而去年，冰层变得如此之薄，一位年轻的狩猎者和他12条猎犬竟葬身于断裂的冰层下。

Last year, the ice was so thin that a young hunter and his dog team of 12 fell through to their deaths.

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