慢速英语:美国学校的饭菜更健康，这会改变吗？

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guideline - n. a rule or instruction that shows or tells how something should be done — usually plural

encourage – v. to make (something) more appealing or more likely to happen

consume – v. to eat or drink something

menu – n. the foods that are served at a meal

index – n. a sign or number that shows how something is changing or performing

editorial – n. an essay in a newspaper or magazine that gives the opinions of the editors or publishers

absolute – adj. complete and total—always used before a noun

incentive – n. something that encourages a person to do something or to work harder