大面积维修、铣刨产生的沥青混合料既污染环境，又浪费资源。
Therefore, it is important to regenerate the waste asphalt mixture in order to protect environment and economize resource.
建筑垃圾排放量巨大，既污染环境，又浪费资源，其综合利用已得到重视。
A great deal of construction debris not only pollute the environment but also waste resources, so its comprehensive utilization has already drawn much attention.
人们在食用牡蛎肉后，将大量牡蛎壳丢弃，既污染环境，又造成了资源浪费。
Large quantities of oyster shell are abandoned, which not only pollute the environment, but also waste resources.
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