第一步：保存图片时使用格式 “增强型windows元文件”

需要较高版本 ppt 版本，保存图片时使用格式 “增强型windows元文件”，输出的emf文件分辨率相当于当前页面尺寸下的 600 dpi，如默认的4:3页面得到像素为6000*4500，足够用了。

第二步：用其他软件将 emf文件转化为 jpg

如windows画图、IrfanView等

 最终emf转换为png的图片

 图片十分清楚

英语演讲原文

My theme is the impact of economic globalization on the environment.

Economic globalization can cause great damage to the environment.For multinational companies in developed countries, in order to evade their mature environmental laws and regulations, they will migrate some production links with high energy consumption and high pollution to developing countries, taking advantage of the loopholes in local immature environmental laws and regulations, and avoiding their due environmental responsibilities.

The essence of the relationship between economy and environment is the conflict between the maximization of interests and the limitation of resources. The growth and expansion of economic activities will bring a series of environmental issues, such as air pollution, water pollution, land destruction, climate change, and so on. These problems not only affect human life and health, but also undermine the stability of the entire ecosystem.

Therefore, we need to try to achieve economic development in a more sustainable way，Such as promoting green technology, using clean energy, enhancing resource management, and improving environmental regulations.

翻译

我的主题是经济全球化对环境的影响。

经济全球化会对环境造成巨大破坏。对于发达国家的跨国公司来说，为了规避其成熟的环境法律法规，他们会利用当地不成熟的环境法规的漏洞，将一些高能耗、高污染的生产环节迁移到发展中国家，以及逃避其应有的环境责任。

经济与环境关系的本质是利益最大化与资源有限之间的冲突。经济活动的增长和扩张将带来一系列环境问题，如空气污染、水污染、土地破坏、气候变化等。这些问题不仅影响人类的生命和健康，还破坏整个生态系统的稳定。

因此，我们需要努力以更可持续的方式实现经济发展，例如推广绿色技术、使用清洁能源、加强资源管理和改善环境法规。