You could also look for jujube seed, bamboo shavings, and oyster shell, which soothe the mind and spirit.

你也可以用枣种子、竹屑和牡蛎壳，它们有助于放松你的心灵。

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OBJECTIVE: to evaluate cytotoxicity and genotoxicity of oyster shell powder.

目的：评价牡蛎壳粉末的细胞毒性和遗传毒性。

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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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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

Waggish lyrics "Though the world is my oyster, it's only a shell full of memories" or "Divine intervention, always my intention so I take my time" are hallmarks of past Ferry songs.

NPR: First Listen: Bryan Ferry, 'Olympia'