NASA最初的两架航天飞机，“哥伦比亚号”和“挑战者号”，比“发现号”更老，但均毁于航天灾难。

NASA's first two shuttles, Columbia and Challenger, were older than Discovery, but both were lost in spaceflight tragedies.

youdao

NASA最初的两架航天飞机，“哥伦比亚号”和“挑战者号”，比“发现号”更老，但均毁于航天灾难。

NASA's first two shuttles, Columbia and Challenger, were older than Discovery, but both were lost in spaceflight tragedies.

youdao