As the grinding goes on, the pieces get small. Over a long time, tiny grains of sand are made.

在风浪的冲刷下，这些碎粒被磨得越来越小，很久以后就形成了很小的沙粒。

youdao

Women once spent long hours grinding grain by hand.

妇女曾经在手工研磨谷物上花上大半天的时间。

youdao

Little did he imagine what that "help" would entail: a long, grinding war in which Libyan fighters waged lethal battles along the coast while NATO bombers pummeled the country from above.

那时他还无法想象“出一份力”到底意味着什么：利比亚战士们沿着海岸线发起一场场致命的战斗，北约战机则在上空强力打击卡扎菲武装，这是一场漫长而代价沉重的战争。

youdao

The stickiness of house prices suggests the drag on consumer spending will be long and grinding, not sudden and sharp.

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Indeed, of the 109 players who appeared in the final of the World Cup or the Euros since 2004, just 15 did so after a long and grinding Premier League season.

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The coastal road to Sablayan was notoriously bad, requiring a long, grinding bus journey from the nearest ports -- Abra de Ilog to the north, or the provincial capital, San Jose, to the south.

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