0 New HSK word(s):
0 Old HSK word(s):
伐地那非 [fa2 de5 na4 fei1] Vardenafil (Med)Vardenafil (Chem)
西地那非 [xi1 de5 na4 fei1] Sildenafil (Wirkstoff von Viagra) (S, Chem)