读报
登录注册网站首页
 

OUR WORLD

In Brief 简讯

作者:21ST
Aa
  • -   
  •    +
Imagining a trip to the red planet

CAN you imagine what it would be like to go on a mission (任务) to Mars?

Unfortunately, to actually go to Mars is still a dream because of the costs and technological challenges.
点击阅读全文
相关文章
联系我们  |  诚聘英才  |  关于我们  |  版权声明
© i21st.cn   京ICP备2024066071号-1
 
选择报纸
选择报纸
关闭