動詞
喺食或者飲某啲嘢、出去飲酒、食飯之前,預先食或者飲定啲嘢先 to eat sth before eating or drinking sth else or before going to a banquet or gathering, etc
飲酒之前最好飲啲牛奶打底,噉就冇咁容易醉。
饮酒之前最好饮啲牛奶打底,噉就冇咁容易醉。
Before you go drinking it's better to drink some milk beforehand, then you won't become drunk so easily.
屋企好晏先至食飯架,我勸你去佢屋企之前,最好食住啲嘢打定底先嘍。
屋企好晏先至食饭架,我劝你去佢屋企之前,最好食住啲嘢打定底先喽。
Their supper is always late, I recommend that you should eat something beforehand before going to her home .
動詞
喺外層嘅衫褲入面著另一層衫褲,用嚟保暖或者防走光之類 to wear sth beneath one's normal clothing for warmth or protection, etc.
我着咗件羊毛衫打底,所以好暖。
我着咗件羊毛衫打底,所以好暖。
I wear a woollen vest beneath my clothes, so I feel very warm.