There is a more straightforward explanation for the scarcity: the surge in commodity prices is simply the result of exploding demand and sluggish supply.

有一个更直接的商品短缺的解释：商品价格的暴涨只不过是需求急剧扩大和供应缓慢增长的结果。

youdao

We can't seem to put down Austen, or leave her alone, or get to the end of her. She has become a commodity for which there is an infinite demand.

对于奥斯汀，我们似乎总也放不下离不开用不完——她已经成了一项有无尽需求的商品。

youdao

Because China's construction sector accounts for a big part of global demand for raw materials such as steel and copper, housing also will help determine the path that commodity prices take.

这是因为钢铁和铜等原材料的全球需求很大部分来自中国建筑部门，住房市场走势也将在一定程度上决定大宗商品价格的走势。

youdao

In the current scenario, it makes perfect sense for the company to focus on the more profitable oil drilling, however, we see enough upside for natural gas price and a robust demand for the commodity going forward.

FORBES: Chesapeake Stock Drilling Its Way To $35

Raising its guidance for aluminum demand next year is a positive sign for major commodity producers and other firms connected to the sector, including Caterpillar, U.S. Steel, and Deere.

FORBES: Alcoa Kicks Off Earnings Season Hitting Estimates, Increasing Its 2013 Demand Outlook

It can be overvalued if there is a large demand for the commodity that is purely artificial.

FORBES: What Is Gold Really Worth?