Overnutrition is associated with a sedentary lifestyle and the continuous availability of food in more affluent countries 营养过剩则与久坐习惯及富裕国家中食物丰富有关。
2.
The ready availability of food at reasonable prices has added environmental cues that encourage us to eat - cues that our grandparents were not subject to 既有食物的合理价格代替了环境的影响而诱使我们有想吃的感觉，而这感觉是我们的祖父母不曾体验的。
3.
One of the difficulties in carrying out a world - wide birth control program lies in the fact that official attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials 在全球范围内实施人口控制计划的困难之一是由于工业发展水平及食物和资源的供应力有所差异，这就决定了各国政府对人口控制的态度互不相同。
