step charging 中文意思是什麼
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On the environment side, dr liao is a strong advocate of the polluters - pay principle and, as an important first step, successfully enacted legislation introducing a charging scheme on demolition and construction waste
在環保方面，廖博士積極提倡「污染者自付」原則，更踏出重要的第一步，制定有關法例，引入處置拆建物料的收費計劃。
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