VOA慢速英语:Study: Use of Antibiotics in Farm Animals Expected to Grow

resistant – adj. not affected or harmed by something

poverty – n. the state of being poor

prosperity – n. the state of being successful, usually by making a lot of money

advocacy – n. the act or process of supporting a cause or proposal; the act or process of advocating something

crowded – adj. filled with too many people or things

oftentimes – adv. often

data – n. facts or information used usually to calculate, analyze or plan something

shift – n. a change in how something is done or how people think about something

intensive – adj. (farming) designed to increase production without using more land

quantities/quantity – n. an amount or number of something

double – v. to cause (something) to become two times as great or as many

purpose – n. the reason why something is done

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