形容詞
指船喺水底嘅部份好深 (of vessels) having a deep draught (distance between the waterline and the bottom of the hull)
形容詞
引伸指舖頭或者中間人賺嘅差額好多；謀取暴利；係歇後語「航空母艦」嘅後半部 commonly used figuratively to refer to shops or middlemen making an unreasonably high profit
佢哋食水好深㗎，一條手鍊成本先至嗰幾十蚊，但係就賣到千幾蚊一條。
佢哋食水好深㗎，一条手链成本先至𠮶几十蚊，但系就卖到千几蚊一条。
keoi5 dei6 sik6 seoi2 hou2 sam1 gaa3, jat1 tiu4 sau2 lin2 sing4 bun2 sin1 zi3 go2 gei2 sap6 man1, daan6 hai6 zau6 maai6 dou3 cin1 gei2 man1 jat1 tiu4. They make a huge profit margin. A bracelet costs well under a hundred for them, but they sell them up to over a thousand dollars each.
基金經理食水好深㗎，我啲強積金賺埋都唔夠蝕管理費！
基金经理食水好深㗎，我啲强积金赚埋都唔够蚀管理费！
gei1 gam1 ging1 lei5 sik6 seoi2 hou2 sam1 gaa3, ngo5 di1 koeng5 zik1 gam1 zaan6 maai4 dou1 m4 gau3 sit6 gun2 lei5 fai3! Fund managers are bloodsucking leeches. My MPF yields less than enough to cover their administration fees!