三废

sān fèisanfei

  1. three types of waste product, namely: waste water 廢水|废水[fei4 shui3], exhaust gas 廢氣|废气[fei4 qi4], industrial slag 廢渣|废渣[fei4 zha1]

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Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences