to prep.对于；为了；(表示方向)到；向；(表示间接关系)给adv.（表示方向）去；（门）关上
双语例句
The risks to health are impossible to quantify. 健康的风险是无法用数量表示的。
He stated that it was difficult to quantify the extent to which such guides and recommendations were used as the basis for existing conformity assessment procedures. 他表示，很难用数量表示此类指南和建议用作现有合格评定程序基础的程度。
