The Air Force quickly became the think tank's main contractor, and Rand began consulting on everything from propeller turbines to missile defense.

空军很快成为了这家智库的主要承包商，兰德开始就从螺旋桨涡轮到导弹防御等一切问题进行咨询。

youdao

The main square has a fountain that spouts water 40 feet into the air.

主广场有个喷泉，喷水高达40英尺。

《柯林斯英汉双解大词典》

The main bone of contention is the temperature level of the air-conditioners.

主要的争议点是空调温度。

《柯林斯英汉双解大词典》

Mister Zundt says diesel vehicles are the main cause of air pollution in Sao Paulo.

VOA: special.2009.09.07

At Rhein-Main Air Base in Frankfurt, flights increased dramatically from mid-afternoon Sunday to mid-day Monday.

CNN: Finally, troops leave Germany for Bosnia

About 4, 500 people work across the 1, 200-acre site (485 hectares), which is one of the Royal Navy's two main air bases.

BBC: No more job cuts at RNAS Yeovilton says Commodore Alexander

Now, he relies on movement through the air as his main weapon.

BBC: Bond in the swing for Kiwis