By developing and adapting these, and by incorporating new ideas, we can find low cost solutions to local problems without resorting to expensive and often inappropriate imported technologies.

• 通过对这些技术加以开发，并融入新的因素，我们不需要引入外来的、昂贵的、不适合本地的技术，也可以为本土问题找出低成本的解决方案。