宇航员表明上看起来是失重的，那是因为他们在不停地往地球方向做自由落体运动，而他们在水平方向上的运动又使他们保持着漂浮的状态。
Astronauts look weightless because they are in continuous freefall towards the Earth, staying aloft because of their horizontal motion.
宇航员表明上看起来是失重的，那是因为他们在不停地往地球方向做自由落体运动，而他们在水平方向上的运动又使他们保持着漂浮的状态。
Astronauts look weightless because they are in continuous freefall towards the Earth, staying aloft because of their horizontal motion.
应用推荐