extendableadj.可展开的；可扩张的；可延长的extendv.延伸；延长；伸展；扩展；提供；使竭尽全力extended contraction mapping广义压缩映射extended metropolitan region都市经济区extended difference function扩展差值函数extended Markuschevich basis扩充的弥库舍维奇基extended summation algorithm扩展求和算法extended stress of the spine脊柱伸展应力Extended Integrated Database扩展综合数据库extend a travel booking deal续签一份旅游预订合约extend one's congratulations应试教育extend the olive olivebranch伸出橄榄枝；表示准备讲和