The eastern leg, along the Grand canal, was supposed to be easiest to finish, but pollution in this heavily industrialised region is so great that water treatment is prohibitively expensive.
沿着大运河的东段本该最先完成，但是已经重度工业化的沿岸地区污染过于严重，水处理所需的开支令人望而却步。
The eastern leg, along the Grand canal, was supposed to be easiest to finish, but pollution in this heavily industrialised region is so great that water treatment is prohibitively expensive.
沿着大运河的东段本该最先完成，但是已经重度工业化的沿岸地区污染过于严重，水处理所需的开支令人望而却步。
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