At the end of the second sentence, add "as well as at the seventh special session of the Governing Council of UNEP, held in Cartagena, and the World Summit on Sustainable Development".
在第2句末尾加上"环境规划署理事会在卡塔赫纳举行的第七届特别会议以及可持续发展问题世界首脑会议"。