难句语法分析（同时分析as opposed to的成分）
Decisions based on utility as opposed to lack of utility are straightforward.
语法分析一（AI给出的答案）：
based on utility as opposed to lack of utility做decisions的后置定语，as opposed to作为based on的对比状语。
翻译为：基于效益而不是缺乏效益的决策是直接了当的。
语法分析二（我的理解）：
as opposed to = as it is opposed to 故原句 = Decisions based on utility as they are opposed to lack of utility are straightforward. = Decisions based on utility are straightforward as they are opposed to lack of utility. （they = Decisions based on utility）as they are opposed to lack of utility. 作为对比状语修饰主句的系表结构。
翻译为：与缺乏效益的决策相比，基于效益的决策是直接了当的。
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