The space shuttle Endeavor has arrived home safely as NASA is defending its decision not to repair the gouge in the shuttle's underbelly in space.
The space shuttle Endeavor has arrived home safely as NASA is defending its decision not to repair the gouge in the shuttle's underbelly in space.
当美国国家宇航局正在为没有对太空中的航天飞机下腹部实施修复的决定辩护时，航天飞机已经安全返航。