Figure 1 shows the middleware infrastructure in relation to the first application to use it (shown in bold), and future applications and future back-end systems (shown in gray).
图1显示了与第一个应用程序有关的中间件基础设施(以粗体显示)，以及未来的应用程序和后端系统(以灰色显示)。
But as NASA looks back at the Apollo 1 accident, it also is looking ahead to an uncertain future.
宇航局一方面回顾阿波罗一号的意外事件，另一方面也要面对一个前途未卜的未来。
But as NASA looks back at the Apollo 1 accident, it also is looking ahead to an uncertain future.
宇航局一方面回顾阿波罗一号的意外事件，另一方面也要面对一个前途未卜的未来。
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