中国是北韩最重要的援助和必需品的供应国.China is North Korea's most important supplier of aid and essential goods.伊朗取代阿曼成为中国进口原油的最大供应国.Iran replaced Oman as the largest crude supplier.专家指出,澳大利亚是世界上众多小麦供应国中的一员.Expers note that Austrilia...