原文：The festival ,Mardi Gras,is French an means "Fat Tuesday".(本人不认为此句有用)
问：“Fat Tuesday”means people can enjoy themselves with big meal.
为什么此处用meal 而不用meals?
写的很详细，但我的问题你没解决，问句中为什么是用with big meal
名词 n.1.餐, 饭 The Bakers have invited us out for a meal tonight.贝克一家今晚请我们到外面去吃饭。This restaurant is known for its Chinese meals.这家餐馆以中国菜出名。2.进餐时间 The family only meet at meals.全家只在进餐时间相聚。Is it usual to have milk with meals?用餐时常喝牛奶吗?3.一餐所吃的食物 4. 谷物粗粉（用作饲料或加工面粉)meals1.伙食
