最近被要求写一篇 Benefits ----Cost Studies 其中有一段要求是: In benefits--cost studies,how might you handle the case where the benefits and costs contain variability, that is they are not deterministic but rather probabilistic in nature? 请求达人帮忙翻译一下,另外能否推荐几本与题目相关的书籍或者网上资料.万分感谢