第1个回答 2013-12-14
其实你要的不是英文解释，而是英文介绍吧。英文解释不需要一两百字的。一开始没有说清楚
Junk food is food that is unhealthy and/or has little or no nutritional value. The term is believed to have been coined by Michael Jacobson, director of the Center for Science in the Public Interest, in 1972. The term has since come into common usage.
Junk food contains high levels of refined sugar, white flour, trans fat and polyunsaturated fat, salt, and numerous food additives such as monosodium glutamate and tartrazine; at the same time, it is lacking in proteins, vitamins and fiber, among other healthy attributes. It is popular with suppliers because it is relatively cheap to manufacture, has a long shelf life and may not require refrigeration. It is popular with consumers because it is easy to purchase, requires little or no preparation, is convenient to consume and has lots of flavor. Consumption of junk food has been associated with obesity, heart disease, Type 2 diabetes and dental cavities. There is also concern about the targeting of marketing to children.
第2个回答 2013-12-14
junk food
n
food that is low in nutritional value, often highly processed or ready-prepared, and eaten instead of or in addition to well-balanced meals