On the other hand, some Chinese ancient famous projects such as Lingqu Canal and Dujiang Dam have been 2000 years, and are still on working.
而我国古代著名水利工程如灵渠、都江堰等，历经两千余年，至今仍然发挥作用，其中必定有宝贵的经验和教训。
On the other hand, some Chinese ancient famous projects such as Lingqu Canal and Dujiang Dam have been 2000 years, and are still on working.
而我国古代著名水利工程如灵渠、都江堰等，历经两千余年，至今仍然发挥作用，其中必定有宝贵的经验和教训。
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