Boeing has committed another $450m in an existing joint venture focused on developing self-flying air taxis in the latest sign of investor appetite for the nascent industry that has seen dozens of start-ups attract billions of dollars over the past year.
波音(Boeing)已承诺向一家开发自动飞行的空中出租车的现有合资企业再投资4.5亿美元。此举是投资者对这一新兴行业感兴趣的最新迹象；过去一年里，该行业的数十家初创企业吸引了数十亿美元。
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