三角翼的哥伦比亚号航天飞机在进入轨道前，起飞两分钟就抛下其两个助推火箭。
The delta-winged Columbia, before reaching the orbit, jettisoned its dual booster rockets two minutes into flight.
三角翼的哥伦比亚号航天飞机在进入轨道前，起飞两分钟就抛下其两个助推火箭。
The delta-winged columbia, before reaching the orbit , jettisoned its dual booster rockets two minutes into flight.
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