1. But talk that the Concorde has outlived its usefulness has persisted, and no other supersonic jetliners are in development. 2. He spends his spare time working on a design for a supersonic jetliner. 3. It was originally thought to be too big, and Boeing never expected to sell many before supersonic commercial jetliners stole the market. 4. A Concorde supersonic jetliner has been donated to the museum but remains in France until facilities are available to accommodate it. |
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