From Cleopatra's milk bath to the ancient Roman habit of using ground oyster shell as a skin lightener, beauty rituals have abounded through generations and geographies.

从克利奥帕特拉的牛奶浴到古罗马用贝壳来提亮肤色的传统，美容仪式在古今中外遍地开花，俯拾皆是。

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Large quantities of oyster shell are abandoned, which not only pollute the environment, but also waste resources.

人们在食用牡蛎肉后，将大量牡蛎壳丢弃，既污染环境，又造成了资源浪费。

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A new technology for producing calcium propionate from oyster shell under normal pressure and temperature was studied.

以牡蛎壳为原料，采用常温常压直接法制备无毒食品防腐剂丙酸钙。

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More than fifty restaurants, seafood dealers and other businesses have joined the Oyster Shell Recycling Alliance.

VOA: special.2010.12.07

Hawkins paces out just one square foot of foreshore and picks up Victorian plate, modern glass, oyster shell, medieval roof tile, granite ballast from merchant ships and clay pipe stems.

BBC: London from the tide line

Having found one, it grows into a spat, which when seen beneath a microscope already resembles a tiny oyster, with the shape of a shell already visible.

ECONOMIST: A dozen ocean-cleaners and a pint of Guinness, please

Schneider scrunches up his nose, a large oyster that has another smaller and deformed relative attached to its curved upper shell has caught his attention.

FORBES: Oysters Are Back In New York City Waters