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来源:雅诚德英语网
As an economical and effective method, the expressway noise barrier is a primary measure to reduce traffic noise.
高速公路隔声屏障作为一种经济有效的方法,是降低交通噪声的主要措施。
As an economical and effective method, the expressway noise barrier is a primary measure to reduce traffic noise.
高速公路隔声屏障作为一种经济有效的方法,是降低交通噪声的主要措施。