stone chip resistant coat 抗石击涂料
Stone chips seal coat 石屑封层
fine stone concrete screed-coat 细石混凝土找平层
stone coat
石头外套
以上为机器翻译结果，长、整句建议使用 人工翻译 。
To preserve them for more than a billion years to make fossils out of ephemera a site first has to coat its remains in a fixative: a thin layer of waterproof sediment that will slowly harden into stone.
NEWYORKER: The Martian Chroniclers
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