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 ...
Katherine took another sip from her glass to calm herself.凯瑟琳又抿了一口杯中的酒，竭力使自己镇静下来。As he looked at Katherine, great sorrow clouded his eyes.他看着凯瑟琳，满眼忧伤。Katherine was forever secretive.凯瑟琳总是神神秘秘的。...
As an asthmatic, he cannot cope with the heat and humidity...他患有哮喘病，经不起高温和潮湿。His illness left him subject to asthmatic attacks.他的病使他容易出现哮喘发作。One child in ten is asthmatic.每十个孩子里就有一人患有气喘病。He is an asthmatic who was also a...
他已花了1,900万英镑，输掉了三场杯赛决赛，球队也降级了。钱也不是万能的。He has spent 19 million pounds, lost three cup finals and been relegated. So much for money.钞票不是万能的。Money is not everything.因为上帝被说成是万能的, 所以他是完美无缺的.Since God is conceived to be omnipo...
在每个封装壳中装有4个变换器,从而可以同许多线接口.There are four translators in each package so a number of lines may be interfaced.ZX系列 产品是供家庭实用的简易型电源变换器.ZX series of products are the simple - type converter for family use.采用正激变换器必须要有磁复位电路才能正常...