It takes four kilograms of grain to produce one kilogram of pork, and two kilograms of grain to produce one kilogram of chicken.是什么意思_It takes four kilograms of grain to produce one kilogram of pork, and two kilograms of grain to produce one kilogram of chicken.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句