2011年5月22日，霍格斯·兰德的农民安娜·哈尔达朵提尔牵着马在火山灰中前行。

Anna Hardadottir, a farmer from Horgsland, leads a horse, through the ash pouring out of the erupting Grimsvoetn volcano, May 22, 2011.

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朵布斯，贝蒂乔提特。《从牛顿的炼金术到他的物质理论》，315-24页。

Dobbs, Betty Jo Teeter. "From 'Newton's Alchemy and His Theory of Matter,'" pp. 315-24.

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朵布斯，贝蒂乔提特。《从牛顿的炼金术到他的物质理论》，315-24页。

Dobbs, Betty Jo Teeter. "From 'Newton's Alchemy and His Theory of Matter,'" pp. 315-24.

youdao