慢速英语:在越南，啤酒是门大生意

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hall – n. a large room of part of a building

focus – v. to direct one's attention or effort on something

dong – n. the name for the money used in Vietnam

role – n. the position in society of a person or thing

benefit - n. things that are good for a person or society

discretionary – adj. additional, unneeded