在头脑风暴会议上，我们被鼓励天马行空地思考未来十年可能出现的科技突破。

During the brainstorming session, we were encouraged to ___blue-sky about potential technological breakthroughs in the next decade.

他们提出了一个天马行空的未来愿景。

They presented a ___blue-sky vision for the future.