Corn is a prime source of feed for dairy cattle and the rising costs could force farmers to reduce their herds, leading in turn to reduced supplies.

玉米是乳用牛饲料的主要来源，价格上涨将迫使农民减少饲养牲口数，进而导致供给减少。

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The ants therefore cultivate these fungi in their nests, bringing them leaves to feed on, and then use them as a source of food.

"因此，蚂蚁在它们的巢中培养这些菌类，用叶子喂养它们，然后把它们当作食物来源。

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Their ability to feed themselves has been an important source of relative stability both within the countries and on world food markets.

他们自给自足的能力一直是国家和世界粮食市场相对稳定的一个重要原因。

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But Monday's post on document-sharing site Pastebin refers readers to a Twitter feed considered a reliable source of Anonymous information.

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But Google needs to feed more off the open source search community, which is both dynamic and innovative.

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Tourism is creating other problems for the local environment, too, including increased population density, over-dependence on wood as a fuel and construction source and the overgrazing and cutting of mountain slopes to feed livestock.

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