the goal of changing a diet is to have a balanced diet first of all we need to understand the nutrition and characteristics of fast food so that we could select the right food to eat
改变饮食的目标是要有一个均衡的饮食首先，我们需要了解快餐的营养和特点，这样我们就可以选择正确的食物吃
以上为机器翻译结果，长、整句建议使用 人工翻译 。