This usually grants a hang glider a good ten-minute flight back down to Earth, even if there are no rising thermals to help keep the craft aloft.
即使没有使滑翔机保持上升的热气流，这种飞行方式依然可以让飞行者在空中飞上个十几分钟。
This usually grants a hang glider a good ten-minute flight back down to Earth, even if there are no rising thermals to help keep the craft aloft.
即使没有使滑翔机保持上升的热气流，这种飞行方式依然可以让飞行者在空中飞上个十几分钟。
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