Sand this fine will be just right.

这样粗细的沙子最合适。

《新英汉大辞典》

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It carries fine particles of sand, which bombard exposed rock surfaces, thereby wearing them into yet more sand.

它携带着细小的沙粒，这些沙粒会轰击裸露的岩石表面，从而把岩石磨成更多的沙子。

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Hanson explains, stress is like fine sand being drizzled into the brain.

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Specially formulated lubricants are used in fracking, which involves pumping water, fine sand and fracking fluids underground to split open oil- and gas-bearing rocks.

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Hydraulic fracturing, or fracking, pumps millions of gallons of water mixed with fine sand and chemicals deep into oil and gas wells to crack gas-bearing rock.

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