With the continuous development of a variety of new drainage pipes in all regions of country, different types and properties pipes play an important role in the use and value.
随着全国各个地区不断开发引进了各种新型的给排水管材，具有不同种类和性能的管道管材，在使用中能够在使用中发挥重要的作用和价值。
The day was chilly and in trying to play the pipes, his fingers grew very cold. He wished he had kept the cow.
天冷极了，为了吹风笛，醋溜先生的手指都冻僵了。他真希望自己没把牛给换走。
The day was chilly and in trying to play the pipes, his fingers grew very cold. He wished he had kept the cow.
天冷极了，为了吹风笛，醋溜先生的手指都冻僵了。他真希望自己没把牛给换走。
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