come to a close 结束five-day conference 五天的会议
the protection of forests and wildlife 保护森林和野生动物
take necessary measures 采取必要的措施
to get rid of pollution, to control population growth and to increase the
average of tree-planting 处理污染，控制人口的增长，增加人均植树量
call on the people of the world 号召全世界的人们
