这显然是麦当劳限制供应其广受欢迎的 McRib 的原因——这一营销手段让猪肉三明治成为人们痴迷的产品。

This is apparently the reason McDonald's restricts the availability of its popular McRib—a marketing trick that has turned the pork sandwich into an object of obsession.

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他们正试图通过限制供应来炒作提高商品价钱。

They're trying to drive up prices by limiting supply.

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曾经能无限制供应的干净淡水，现在变得有限了。

The once unlimited supply of fresh, clean water is now limited.

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