求翻译：吃零食是一种不好的习惯，有些同学每天花太多钱零食吃，零食大多数为非健康食品，容易使人发胖，甚至生病，很多同学吃完零食乱扔包装袋，高中生应该养成好的饮食习惯，拒绝零食是什么意思？

Snacking is a bad habit, some students spend too much money snack every day, most of snacks are unhealthy food, easy to make people fat, even sick, many students eat snacks throw bag, high school students should develop good eating habits, refused snacks