根据矿区生态系统健康内涵，建立了评价指标体系，提出了矿区生态系统健康趋势评价方法。
Based on the connotation of health of ecosystem in mining areas and the evaluating indicator system, this paper puts forward the evaluation method of ecosystem health trend in mining areas.
此时正值年中，讨论和评价行业趋势这个话题是再好不过了。
It is a middle of the year, and it is a perfect time to evaluate and talking about business trends.
美国基础教育课程评价的发展趋势可以成为我国课程评价的一个基点研究。
The development trend of the American elementary education course evaluation can become a point research in our country.
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