1·The astronauts are conducting a series of experiments to learn more about how the body adapts to weightlessness.
那些宇航员正在进行一系列实验，以便更多地了解人体如何适应失重状态。
—— 《柯林斯英汉双解大词典》
2·Uniformly, these people experienced weightlessness and the sensation that their bodies were being stretched lengthwise.
无一例外地，这些人都体验到了失重和身体被纵向拉伸的感觉。
3·Some of the equipment measures the effects of space conditions, such as apparent weightlessness, on biological specimens — including the crew.
其中一些设备用来测试太空环境(如明显的失重)对人体的影响——其生物样本包括乘组人员。
4·At this altitude, the five passengers onboard could experience a few minutes of weightlessness before strapping themselves back in their seats for the return flight to the ground.
在这个高度上，五位搭载乘客可以在飞船返回地面离开座椅的几分钟内体会一下失重的感觉。
5·He came closest to visiting alien worlds through his love of deep-sea diving, its weightlessness and strange life forms.
他热爱深海潜水，水下的失重状态和千奇百怪的生命体给了他最接近漫游外太空的感觉。