0 Old HSK word(s):


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Hsk Characters:
HSK -Characters and beyond:
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Luftreinhaltung (S) [da4 qi4 wu1 ran3 kong4 zhi4] 大气污染控制
Luftschadstoff (S) [da4 qi4 wu1 ran3 wu4] 大气污染物
Luftverunreinigung, Luftverschmutzung (S) [da4 qi4 wu1 ran3] 大气污染