Greening attenuation of noise was affected largely by belt width.For wider tree belt, the inner half close to noise source had more significant effect to reduce traffic noise than the outer half.是什么意思_Greening attenuation of noise was affected largely by belt width.For wider tree belt, the inner half close to noise source had more significant effect to reduce traffic noise than the outer half.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句