三矿苹果：three baskets of apples
半筐苹果：Half a basket of apples可好多地方也能看到 three baskets of apple的用法，另外，Half a basket of apples 谓语动词是is or are?threee baskets of apples 更准确，因为筐里的苹果是复数，另半框苹果谓语动词是is