Space shuttle Atlantis sits on Launch Pad 39A after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath.是什么意思_Space shuttle Atlantis sits on Launch Pad 39A after rollout from the Vehicle Assembly Building. The shuttle sits atop the mobile launcher platform, which is carried by the crawler-transporter beneath.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句