To absorb sunlight, M.I.T. researchers created a porous disc of graphite flakes.

为了吸收阳光，麻省理工学院的研究人员制造了一个多孔渗水的石墨薄片圆盘。

This is understood to use heat and mechanical means to excite graphite flakes in such a way that the layers of carbon within open up, allowing impurities to be washed away with less-harmful chemicals.

这被理解为使用热量和机械手段来激发石墨薄片， 从而使内部的碳层打开，从而用危害较小的化学物质将杂质洗掉。