aWhat does the underlined word change means in the passage 什么在段落做在下面划线的词变动手段[translate] aAnimal blood has an important nutritive value due to the high levels of protein and heme iron that it contains. 动物血液有重要营养价值由于它包含的高水平蛋白质和heme铁。[translate] ...
bringing down oil prices. The prices of many other commodities, such as coal and iron ore, are down as well. Instead of oil prices staying up near the cost of extraction, they have fallen