In modern society, there has been a prevalenttrend that teenagers prefer to have fast food instead of traditional food.
在现代社会，一个普遍流行的饮食趋势是比起传统食物，年轻人更喜欢吃快餐。 。
2
Objective to understand the characteristic, prevalenttrend and influence factors of road injury and provide basis for controlling road injury.
目的探讨我省道路伤害的特征、流行趋势及其影响因素，为控制道路伤害提供依据。
3
Objective To make the distribution map of malaria infection in Ruili area, Yunnan Province by geographical information system (GIS) and analyze malaria prevalenttrend.