保持四头肌的紧张，双脚会一直跟随着大腿向上，直到完全直立。
If you maintain the action of the quadriceps, the feet will follow the lift of your thighs until you are upright.
Strobel说：“结果完全出人意料，它让我兴奋得汗毛直立。”
"The results were totally unexpected and very exciting and almost every hair on my arms stood on end," said Strobel.
请您留在座位坐好，并系好安全带，椅背保持直立位置，直到飞机完全停稳为止。
You are asked to remain seated with safety belts fastened and with seats in an upright position until the aircraft has come to a complete halt.
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