roll-out
/ˈrəʊlaʊt/noun
1
- the unveiling of a new aircraft or spacecraft（新型飞机或宇宙飞行器的）初次公开展出。
1.1
- the official launch of a new product or service新产品（或服务项目的）上市。
2
- Aeronautics the stage of an aircraft's landing during which it travels along the runway while losing speed【航空】（飞机的）着陆滑跑。
3
- American Football a play in which a quarterback moves out toward the sideline before attempting to pass【美橄】（枢纽前卫的）横移突破战术。