四是合理优化农村英语教学课程设置与语言环境。
Forth, collocating the English teaching course in the countryside and the languages environment reasonably.
通过合理优化施工方案，缩短建井总工期131天。
Based on reasonable construction plan, shorten construction time 131 days.
介绍了火力发电厂除尘器改造的设计方案，论述了合理优化的方法及依据。
The draft of precipitator's remake in Fossile Power Plant is introduced, and reasonable optimization is discussed.
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