该指数通过观察2004-2008年的18项环境指标评估112座城市的可持续性，这些指标包括空气污染、污水回收利用、公共交通等。
The index assessed sustainability in 112 cities by looking at 18 environmental indicators — from air pollution to waste recycling to mass transit — for the years 2004-2008.
目前，按照要求，审计师本应评估一家公司是否具有持续经营的能力，但审计师往往只关注企业的财务实力，而不是经营的可持续性。
Right now, auditors are required to assess whether a company is likely to continue as a going concern, but they tend to focus only on financial strength rather than sustainability.
标准界定了评估可持续性的基本要素，同时适当考虑森林及森林生态系统的生产、保护及社会职能。
Criteria define the essential elements against which sustainability is assessed, with due consideration paid to the productive, protective and social roles of forests and forest ecosystems.
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