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。

youdao

The attic is a prime source for heat and cold air exchange.

阁楼是冷热空气交换的源头。

youdao

Urban farms solve the prime source of waste-in fuel, pollutants and time-in the food industry: transportation.

在城镇中兴建农场解决了食品行业资源浪费的主要问题——食品运输过程中消耗的燃料、造成的污染还有耗费的时间。

youdao

As the chart shows, business investment has been the prime source of growth during America's expansion.

ECONOMIST: Bear necessities

More importantly the prime source of revenues for both companies is online advertising.

FORBES: Move up http://i.forbesimg.com t Move down

The second thing: Everybody sees energy as a prime source of growth in the future, and we're already slipping behind.

WHITEHOUSE: The White House