Several of my classmates turned work-study jobs into launching pads for future careers.

我的几个同学将在读书时做的工作当作未来职业生涯的跳板。

Civil engineers were necessary in the design and construction of such structures as launching pads.

设计和建设像发射台样的建筑需要土木工程师的参与。

The Launch Control Center, NASA Press Site and other structures are outside a 3-mile (4.8-km) safety perimeter from the launching pads.

发射控制中心、NASA新闻中心和其他建筑位于远离发射台3英里（4.8公里）之外的安全地带。