riskern.冒险者；投机者riskn.危险；风险；投资报酬的风险vt.冒 ... 的危险；承受...的风险risk of hook damage钩损险risk severity index风险严重度指数risk of carcinogens致癌风险risk - investment风险投资risk-based design以险情为基础设计risk of brain drain流失风险risk cause analysis风险成因分析risk classification危险分类risk categorization风险分类risks of evaluation风险评估