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First test flight of largest all-electric aircraft used just $5 of electricity
全球最大全电动飞机首飞成功，耗电仅5美元，航空电气化迈出关键一步，看点十足。
Airline-backed venture aims to develop a hybrid-electric commercial aircraft.
全球最大全电动飞机首飞成功，耗电仅5美元，航空电气化迈出关键一步，看点十足。
Airline-backed venture aims to develop a hybrid-electric commercial aircraft.