洗碗一定要落洗潔精先洗得乾淨㗎!
洗碗一定要落洗洁精先洗得干净㗎!
sai2 wun2 jat1 ding6 jiu3 lok6 sai2 git3 zing1 sin1 sai2 dak1 gon1 zeng6 gaa3! The use of dishwashing detergent is essential for making the dishes clean!
Definitions (Wiktionary)
noun
detergent (especially one used in dishwashing); dishwashing liquid; washing-up liquid (Classifier: 瓶 m; 支 c)