适当的策略优化可以在不增加或者增加少量开销的情况下，大幅提高策略管理系统的性能，达到事半功倍的效果。
Properly policy optimization could increase system performance remarkably with no cost or a little cost, get twice the result with half the effort.
要通过工作提高生活质量，两个互补的策略很必要。
To improve the quality of life through work, two complementary strategies are necessary.
美国国家科学基金会似乎有一种提高高中计算机科学教育的合理策略。
The N.S.F. seems to have a sound strategy for elevating computer science education in high schools.
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