test flight的用法和樣例：
例句
用作名詞 (n.)
- The trial flight has made the grade.
試飛成功。 - The engine cracked on the first test flight.
在首次試飛時，發動機發生裂紋。 - Our test flight was to discover the bugs in the new plane.
試驗飛行是為了發現新飛機有何毛病。 - The first orbital test flight is scheduled for just two and a half years from now.
預計第一次軌道試驗飛行將在兩年半後進行。
