产业结构是指一个国家或地区经济中不同产业之间的比例和结构分布关系。产业结构的调整是指通过改变产业之间的比例和结构关系，来优化经济发展的方式和方向。为什么要调整产业结构？这是一个重要的问题，本文将从经济增长、可持续发展和经济风险管理等角度进行解答。

首先，调整产业结构有助于推动经济增长。随着经济的发展，一些传统产业可能会逐渐衰退，而新兴产业则会崭露头角。通过调整产业结构，我们可以促进新兴产业的发展，推动技术创新和产业升级，从而提高经济增长的水平和质量。

Firstly, adjusting the industrial structure helps to promote economic growth. With the development of the economy, some traditional industries may decline while emerging industries emerge. By adjusting the industrial structure, we can promote the development of emerging industries, stimulate technological innovation and industrial upgrading, thereby improving the level and quality of economic growth.

其次，调整产业结构也是实现可持续发展的必然要求。过去，一些产业在追求短期经济利益的同时，也给环境带来了严重的污染和资源浪费问题。通过调整产业结构，我们可以减少对环境的破坏，并发展更加环保和可持续的产业。这样不仅符合人民对美好生活的追求，也有利于地球的可持续发展。

Secondly, adjusting the industrial structure is also an inevitable requirement for achieving sustainable development. In the past, while pursuing short-term economic benefits, some industries have also brought serious pollution and resource waste problems to the environment. By adjusting the industrial structure, we can reduce environmental damage and develop more environmentally friendly and sustainable industries. This not only meets people's pursuit of a better life but also promotes the sustainable development of the Earth.

此外，调整产业结构还有助于降低经济风险。一个过度依赖某个产业的经济体，一旦该产业出现问题，整个经济都会受到严重冲击。通过调整产业结构，我们可以实现经济的多元化，减少对某个特定产业的依赖，从而降低经济风险，增强经济的韧性和抗风险能力。

In addition, adjusting the industrial structure also helps to reduce economic risks. An economy that overly relies on a certain industry will suffer severe impacts if that industry encounters problems. By adjusting the industrial structure, we can achieve economic diversification, reduce dependence on a specific industry, thereby reducing economic risks and enhancing economic resilience and risk resistance.

总之，产业结构调整是一项重要的经济管理任务。通过调整产业结构，我们可以推动经济增长，实现可持续发展，并降低经济风险。因此，各国政府和企业应该加强合作，制定合适的政策和措施，鼓励产业结构调整，为经济可持续发展奠定良好的基础。

In conclusion, adjusting the industrial structure is an important task in economic management. By adjusting the industrial structure, we can promote economic growth, achieve sustainable development, and reduce economic risks. Therefore, governments and enterprises should strengthen cooperation, formulate appropriate policies and measures to encourage the adjustment of the industrial structure, and lay a solid foundation for sustainable economic development.