0 New HSK word(s):

0 Old HSK word(s):

光油水平监视 [guang1 you2 shui3 ping2 jian1 shi4]

Lackniveauüberwachung (S)
油水 [you2 shui3]

Fett, Profit, Reibach, unrechtmäßiger Gewinn (S)
油水分离器 [you2 shui3 fen1 li2 qi4]

Ölabscheider (S)