Task: Translation
Input (English): The researchers say that there is an emerging "widespread consensus" among experts that a large part of the population has levels of Vitamin D in their bodies that is well below optimal concentrations for health, particularly in temperate regions, due to decreased sunlight and or less time outdoors, and during or just after the winter months.
Output (Chinese): 研究人员表示，专家们之间正在形成一种“广泛的共识”，即大部分人口体内的维生素D水平远远低于健康的最佳浓度，特别是在阳光减少或户外时间减少的温带地区，以及在冬季或刚过冬季的几个月。