That was why they built airbases and silos here in the first place.

这就是为什么他们起初在这里建空军和储备基地。

youdao

The aviation education, especially, was incorporated with not only attending air shows and visiting airbases, but also the relevant instructions and materials in schools.

特别是在学生的航空教育方面，除了安排学生参访飞行表演及航空基地外，在学校课程与教材上也多有相关的内容介绍。

youdao

During the war Bomber Command was tasked with attacking Germany's airbases, troops, shipping and industry.

BBC: 'About time' Bomber Command war veterans honoured

Carrier pigeons were transported to neighbouring airbases and occupied France, returning to the codebreaking centre under their own steam with messages from the Resistance.

BBC: Quiz of the week's news