美军如何发明了美国人最喜欢的零食

snack – n. small amount of food eaten between meals

instant – adj. partially prepared by the manufacturer to make final preparation easy

package – n. a wrapper or container that covers or holds something

tremendous – adj. very large or great

rations – n. a particular amount of food that is given to one person for one day

technique – n. a way of doing something by using special knowledge or skill

dehydration – n. the process of removing water from something

pet – n. an animal (such as a dog, cat, bird, or fish) that people keep mainly for pleasure

baked goods – n. cookies, cakes, other snacks made with butter, flour and sugar

candy – n. a sugary snack

microwave vacuum – n. a very short wave of electromagnetic energy that removes water