Sand this fine will be just right.

这样粗细的沙子最合适。

《新英汉大辞典》

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。

youdao

It is fine sand.

这是细砂。

youdao

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.

NPR: Judge Sides With Wyoming In Fracking Chemical Suit

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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