每当需求过剩的时候，最先涨价的总是价格灵活的商品，其中最主要的就是大宗商品。

Whenever excess demand hits, the goods whose prices rise first are ones with flexible prices, of which commodities are the prime example.

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随着房价的预期上涨，富裕家庭购买了好几套房子，从而导致房子需求过剩。

With anticipation of rising house prices, wealthy households purchased several houses, creating excess demand for houses.

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然后，市场需求，市场均衡是显示在以下后，其中包含的过度供给和需求过剩。

Then, after the market demand the market equilibrium is showed on the following, which contains the excess supply and excess demand.

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