Eating patterns change over time. Ingredients cannot be seen before in a country might begin to appear in local markets, shipped from abroad. Migration causes cultures to change, and eating patterns invariably reflect new influences.
飲食習慣隨時間的變化而變化。以前在整個國家裏從沒見過的材料可能會從國外運來，開始出現在當地的市場。移民引起文化變化，而飲食習慣無不體現出新的影響。
In the 20th century, few people have the time to go home for lunch，and many city dwellers find themselves in need of grabbing a bite to eat in a place close to their offices. As a result, the popularity of fast food and takeaway food has risen. In many urban areas, people who traditionally ate their main meal at midday now enjoy it in the evening，after work.
在二十世紀，很少有人有時間回家吃午飯，許多城市居民發現自己需要在一個接近他們辦公室的地方吃東西。結果，快餐和外賣食品得到普及並有上升趨勢。在許多城市地區，他們傳統上吃主餐是在中午，而現在改到了晚上，在他們下班後。
Changing eating patterns have an effect on other aspects of society. Meals have traditionally been times when members of a family catch up with each other. Fast food and quick meals sometimes threaten such family get-together.
改變飲食習慣對社會有着其他方面的影響。膳食歷來就是家人們聚在一起吃的。快餐食品和快餐有時候會這威脅到這樣的家庭聚會。
