We can also adopt sand shell moulding or metal mold casting as for allotype castings.

对异形铸件，还可用砂型铸造或金属型铸造。

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A sort of chilled nodular iron camshaft was developed by adopting resin-coated sand shell mould casting process.

开发了一种采用树脂砂壳型铸造的激冷球铁凸轮轴。

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Allow your disappointment to form a pearl just as an oyster does when an irritating grain of sand gets inside its shell, but grab the pearl before the sand gets in your eyes.

把你的失望孕育成一枚珍珠，就像牡蛎对待一颗落入壳中的沙砾一样，但要在沙砾进入你的眼睛前抓紧珍珠。

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You could throw it like a small javelin, or stab it into a piece of steak instead of using a fork, or you might take the ink cartridge out of the pen and fill the hollow shell with sand (just because you like sand).

FORBES: How Language and Music Made Us Human

The red dirt gave way to smooth, egg-shell-white sand.

FORBES: Life

Continuing the theme of found food, a soft-shell crab is presented as an edible beach treasure, surrounded by amaranth grains for sand and brown-butter sauce for seawater.

NEWYORKER: Atera