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慢速英语:客机引擎空中爆炸 波音建议777客机停飞
日期:2021-02-23
Words in This Story

regulator – n. an official who works for the part of government that controls a public activity by making and enforcing rules

fan blade – n. part of a jet engine that turns very quickly forcing air through the engine

flash – n. a sudden bright light


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