在白天爬升，原型机最终达到海拔30000米的高度，打破了非火箭动力飞行的高度纪录。
Climbing during daylight hours, the prototype aircraft ultimately reached an altitude just short of 30, 000 meters, breaking records for non-rocket powered flight.
在白天爬升，原型机最终达到海拔30000米的高度，打破了非火箭动力飞行的高度纪录。
Climbing during daylight hours, the prototype aircraft ultimately reached an altitude just short of 30, 000 meters, breaking records for non-rocket powered flight.
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