这次考察航程最初的目的是测量持久性有机污染物之类的化学物质，而对金属的研究是一个后即想法。
The original objective of the voyage was to measure chemicals known as persistent organic pollutants, and the study of metals was an afterthought.
二恶英是一组对环境具有持久性污染力的化学物质。
Dioxins are a group of chemically-related compounds that are persistent environmental pollutants.
这样的警告来自于一份全新的国际科学报告，它详细研究了气候变化与名为“持久性有机污染”的一系列人为有毒物质之间的关系。
The warning comes in new international study into the links between climate change and a class of man-made toxins called persistent organic pollutants.
持久性毒性物质散播到全球环境中，威胁到生态环境的稳定和人类的健康。
Persistent toxic substances (PTSs) have been scattered to the whole world. It also has been threatened the ecosystem's stabilization and human health.
需要的是改变固有的文化观念与视野，在更具持久性的精神价值和物质追求之间取得更适当的平衡。
What is needed is a change in cultural mindset and horizon, and a fine balance between the more enduring spiritual values and materialistic enrichment.
需要的是改变固有的文化观念与视野，在更具持久性的精神价值和物质追求之间取得更适当的平衡。
What is needed is a change in cultural mindset and horizon, and a fine balance between the more enduring spiritual values and materialistic enrichment.
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