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These are used for building or are broken down for use as an aggregate for concrete or as ballast chippings.
砖材用于建造房屋,或将其破碎作为混凝土骨料和铺道渣。
youdao
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These are used for building or are broken down for use as an aggregate for concrete or as ballast chippings.
砖材用于建造房屋,或将其破碎作为混凝土骨料和铺道渣。
youdao