jet shuttles 中文意思是什麼
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Nasa prefers landing shuttles at the same place where it launches them, to avoid the several days and estimated $ 1 million in ferrying the spacecraft atop a modified jumbo jet back from the west coast
Nasa傾向于讓航天飛機在原來的發射場著陸，因為這樣可以不用花幾天時間把航天飛機放在一架改裝過的巨型噴氣式飛機上從西海岸運回，免去了大約100萬美元的運輸費用。
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