Based on features, current main functions and study on existing problems of trade associations' information function, this paper ends with Suggestions to improve it.
本文通过对行业协会信息功能的特征、现有主要信息功能及其存在的主要问题的研究，提出完善我国行业协会信息功能的建议。
On the basis of reviewing the study history of China loess and analyzing the present situation in this field, the authors advanced some problems existing in the study of China loess.
本文在回顾和分析中国黄土研究历史与现状的基础上，提出了目前中国黄土研究中存在的若干问题。
CONCLUSION: It is urgent to closely study the existing problems, and to take active preventive measures to reduce the impact of socio-environmental factors on population health as possible.
结论：应该对存在的问题进行分析，并积极采取预防措施，从而使社会环境因素对人群健康的影响降到最低。
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