Revealed, the happiest countries in the world(2)

为了编写数据,研究人员直接采访了每个国家的居民以获取意见.

Experienced well-being: This was assessed using a question called the 'Ladder of Life' from the Gallup World Poll. This asks respondents to imagine a ladder, where 0 represents the worst possible life and 10 the best possible life, and report the step of the ladder they feel they currently stand on.

幸福体验值：该部分使用了盖洛普世界民意调查（Gallup World Poll）名为"生命阶梯"（Ladder of Life）的一个问题.要求调查对象想象一个阶梯,0代表最糟的可能生活,10代表最佳的可能生活,并说明他们目前所过的生活处于哪个阶梯.

Life expectancy: Alongside experienced well-being, the Happy PIanet Index includes a universally important measure of health – life expectancy. We used life expectancy data from the 2011 UNDP Human Development Report

预期寿命：除了幸福体验值,幸福星球指数也包含了一项普遍重要的健康标准——预期寿命.我们使用的预期寿命数据来自2011年联合国开发计划署的人类发展报告（2011 UNDP Human Development Report）.

Ecological Footprint. The HPI uses the Ecological Footprint promoted by the environmental charity WWF as a measure of resource consumption. It is a per capita measure of the amount of land required to sustain a country's consumption patterns, measured in terms of global hectares (g ha) which represent a hectare of land with average productive biocapacity.

生态足迹：幸福星球指数使用环保慈善组织世界自然基金会（WWF）倡导的生态足迹,作为资源消耗的一种标准.这是一个土地总量的人均衡量标准,在此标准下,一个国家要能维持平均生态承载能力所需的土地面积,该面积以公顷来衡量（克/公顷）.

Two of the three main factors are directly about happiness. The third (Ecological footprint) is regarded as sustainable happiness. i.e. whether a country could sustain its citizens without any outside help.

三个主要因素中的两个都直接与幸福相关.第三个（生态足迹）被认为是可持续幸福.例如,一个国家是否可以在不靠任何外界帮助的情况下维持其公民生活.

The idea is that if there was an incident which cut a country completely off from the outside world, or a country had to be completely self-sufficient, most of the developed world would be unable to do that (without losing a lot of its population first).

观点是,若突发事件导致一个国家与外部世界失去联系,或在不流失大量人口的前提下,大多数发达国家是做不到完全自给自足这一点的.

The reason for some high-income nations to score significantly below other nations is the ecological footprint left on the planet.

一些高收入国家的指数显著低于他国的原因在于生态足迹.

Mexicans and Canadians both appear to be happier than their US neighbour - most likely due to the country's ecological footprint.

据显示,墨西哥人和加拿大人都比他们的邻居美国人幸福,这主要归功于国家的生态足迹.