身边的经济学·社会常识英语30篇（7）

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价格为何毫无预警地变动

You might notice orange juice costs more one week and less the next—and it’s rarely random.
Bad weather in Florida can damage orange crops, reducing supply and pushing prices upward quickly.
If many people suddenly start baking at home, demand for flour rises, and stores raise prices to balance stocks.
Currency changes also matter: when the dollar weakens, imported chocolate becomes more expensive for U.S. buyers.
Companies don’t raise prices just to earn more—they do it to cover higher costs or match market expectations.
Sometimes a viral social media post makes a product popular overnight, forcing sellers to adjust pricing fast.
Price tags reflect real-time conversations between farmers, factories, shoppers, and global events.
Understanding this helps you spot temporary spikes—and avoid overreacting to short-term changes.