動詞
浪費時間同精神去説服一個人或者解釋一件事 to waste one's words; literally: to waste saliva
你咪嘥口水啦,佢咁硬頸點會聽你講吖?
你咪嘥口水啦,佢咁硬颈点会听你讲吖?
nei5 mai5 saai1 hau2 seoi2 laa1, keoi5 gam3 ngaang6 geng2 dim2 wui5 teng1 nei5 gong2 aa1? Don't waste your words, he is too stubborn to listen to you.