Keywords: ahazard potency of debris flow, externality, cost - benefit analysis.关键词: 土石流特定水土保持区 、 外部性 、 成本效益 分析.Pollution is considered as a form of negative externality in economic growth.摘要环境污染是经济增长过程中的“负产品”.The damage ...
那个陶工精心地制作了这个花瓶.The potter carefully shaped the vase.他们寻找曾经仿制过古代器皿的陶工.They sought out potters who had once made copies of the ancient vessels.那个陶工把他的标记压印在陶罐底下.The potter stamped his sign on the bottom of the pot....