音标发音英式音标 [ˌdʒiː.diːˈeɪ]美式音标 [ˌdʒiː.diːˈeɪ]英式发音 美式发音 基本解释每日攝取量指引（食品包裝上告知消費者每日營養攝入量信息的標識，Guideline Daily Amount的縮寫）。同根派生 GDA相关词英英字典劍橋英英字典 abbreviation for Guideline Daily Amount: used on food packaging to tell you how much of something you should eat each day in order to stay healthyGDA剑桥字典GDA柯林斯字典