The planetary life support systems(生命支持系统) relied upon by humans have deteriorated(恶化) to their worst levels ever recorded amid ongoing pollution and habitat destruction(在持续污染和栖息地破坏中), according to a key yet grim(严峻的) annual update by scientists.
科学家发布的一份关键却严峻的年度更新报告显示，在持续污染和栖息地破坏的背景下，人类所依赖的地球生命支持系统已恶化至有记录以来的最差水平。
Of the nine “planetary boundaries” that help determine whether life can flourish on Earth, seven are being breached at their highest ever levels of transgression, according to the latest planetary health check, a process that was established in 2009.(在九大“地球边界”中，有七项正被突破，且突破程度达到历史最高水平。)
根据最新的“行星健康检查”，在有助于决定地球生命能否繁荣的九大“地球边界”中，有七项正被突破，且突破程度达到历史最高水平。这一检查流程始于2009年。
The seven key indicators in the danger zone(处于危险区域) include climate change, change in biosphere integrity(生物圈完整性), land system change, freshwater change, modification of biogeochemical flows(生物地球化学流动), introduction of novel entities(新实体) and, for the first time last year, ocean acidification(海洋酸化).
处于危险区域的七项关键指标包括：气候变化、生物圈完整性变化、土地系统变化、淡水变化、生物地球化学流动的改变、新实体的引入，以及去年首次出现的海洋酸化。