美国航空航天局说新的技术飞跃将取代航天飞机。
NASA says that the shuttles will be succeeded by new leaps forward.
尽管研究人员正在寻找新材料以提高性能，但要出现显著技术飞跃的可能性不大。
While researchers are looking at new materials to improve performance, giant technical leaps aren't likely.
尽管研究人员正在寻找新材料以提高性能，但要出现显著技术飞跃的可能性不大。
While researchers are looking at new materials to improve performance, giant technical leaps aren"t likely."
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