中英释义：
双语例句
利用传统的决策树方法，无法确定一个次优方案，对所有方案进行排序也很难。
It is difficult to use the decision tree method to find the sub-optimal solution, not to mention the alternative ranking.
重点词汇
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次优
second best; suboptimal; next best; nearly optimal
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方案
programme; plan; scheme; program; project; proposal; design; solution; strategy; blueprint