目的为了深入研究狂犬病的流行规律，掌握流行动态及发病趋势，为制订防治策略提供科学依据。
OBJECTIVE For anin-depth study of the prevalence of rabies, mastering pop dynamics and morbidity trends and providing scientific basis for the prevention strategy.
因此，掌握家居饰品的流行趋势就显得十分重要。
Therefore, to grasp the popular trend of household seems important.
目的了解和掌握洛阳市中小学生营养不良和肥胖流行趋势，为探讨预防对策提供依据。
Objective to study the trend of obesity and malnutrition, and to provide evidence for the precaution and prevention.
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