With labour one of their biggest costs—42 percent of productionexpenses on U.S. farms, on average—they started using a mechanical harvest.
由于劳动力是他们最大的成本之一——平均占美国农场生产成本的42%——他们开始使用机械收割。
2
With labour one of their biggest costs—42 percent of productionexpenses on U.S. farms, on average—they started using a mechanical harvester adapted from a machine used by wine makers.