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慢速英语:美国批准无人机送货
日期:2021-01-02
Words in This Story

delivery – n. the act of taking something to a person or place

routinely – adv. done very often

sector – n. an area of an economy : a part of an economy that includes certain kinds of jobs

remote – adj. capable of being controlled from a distance: connected to a computer system from another place:


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