原文1
… Will economic growth (driven by trade) help us to move towards a sustainable use of the world’s environmental resources? The study shows that trade could play a positive role in this process by facilitating the diffusion of environment-friendly technologies around the world / and is backed up by the five case studies on chemical-intensive agriculture, deforestation, global warming, acid rain, and overfishing.
 
参考译文
……以贸易带动经济增长是否有助于我们朝着可持续利用世界环境资源的方向迈进？该项研究表明，国际贸易可通过在世界范围内协助传播环保技术，在此过程中发挥积极作用。该项研究得到了五个案例分析的支持，这五个案例涉及的方面包括：化工密集型农业、森林砍伐、全球变暖、酸雨以及渔业资源的过度捕捞。
back up: support如：All the evidence backs up her story.