0 New HSK word(s):

0 Old HSK word(s):

环状白斑 [huan2 zhuang4 bai2 ban1]

Butzen, Partisanen, Popel (Papierfussel, 印刷缺陷)
环状珊瑚岛 [huan2 zhuang4 shan1 hu2 dao3]

Atoll (S)