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近年来,在自然条件和非自然条件的影响下,水利事业面临着许多新的问题和压力,于是发展节约灌溉逐渐成为水利事业的关键。
In recent years, under the influence of natural conditions and unnatural conditions, water conservancy undertakings are facing many new problems and pressures, so the development of economically-conserved irrigation has gradually become the key to water conservancy.