Its purpose is not to do a meaningful calculation, but to provide an easy-to-understand illustration of our solution.

它的目的并不是做有意义的计算，而是为我们的解决方案提供一个易于理解的说明。

Listings 30 and 31 provide a complete illustration of conversion process.

清单30和31提供了转换过程的完整演示。

We provide professional design and illustration services in a reasonable price.

我们提供专业的设计服务，价格公道！

Water waves approaching a sloping beach provide us a conspicuous illustration of the phenomenon of refraction.

向倾斜着的海滩接近的水波为我们提供了一幅明显的折射图像。