根据月球研究和行星际飞行任务的需要，为了提高火箭的推重比，要为运载火箭新安装一个第三子级。
Missions for study of the Moon and interplanetary flight required re-equipping the launch vehicle with a third stage to increase its power-mass characteristics.
伊卡洛斯团队正在探索将各种系统和概念进行最佳的组合，来构建一个使用现代技术或近未来技术进行星际飞行的实例。
The Icarus team is on the hunt for the right combination of systems and ideas that will make a plausible case for interstellar flight using current and near future technologies.
伊卡洛斯团队正在探索将各种系统和概念进行最佳的组合，来构建一个使用现代技术或近未来技术进行星际飞行的实例。
The Icarus team is on the hunt for the right combination of systems and ideas that will make a plausible case for interstellar flight using current and near future technologies.
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