翻译下面段落 Eating habits refer to why and how people eat, which foods they eat, and with whom they eat. People eat in order to survive and according to learned behavior , including etiquette, meal patterns , food combinations and portion sizes. A common eating pattern is three meals per day, with snacks between meals. In each culture there are both acceptable and unacceptable foods. The major influences that determine what foods a person eats involve personal preferences and cultural, social religious, economic and even political factors.