I had a genuine sense of weightlessness , as if the car had taken flight .
我有一种真正的失重感，好像车在飞翔。
Some 69 miles above earth , in a darkening void , customers will experience a few minutes of weightlessness and gaze out the window at the curvature of their planetary home .
Unlike a real spaceflight , mission participants will not be subjected to the debilitating effects of weightlessness and ionizing radiation .
与真正的宇宙飞行不同的是，参与该任务的队员不会受到失重和电离辐射的致衰弱的作用。
Quinn says the sculpture plays on weight ( it is made of heavy metal ) and the illusion of weightlessness .
奎恩说这个雕塑利用了重力（其材质是重金属）和失重感的错觉。
Many observers found fault with the exercise 's lack of realism , saying that the mission could not simulate weightlessness , true danger or the pressure and motivation of a real journey to mars .
