under the radar

基本解释

There's no formal budget; SAs are built and run under the radar of central IT.
不存在正式预算；情景应用程序是在中心 IT 控制下构建和运行的。
While most towns don’t have a local swingers club you can pop into at any time, many smaller towns do have roving parties under the radar.
当然，大部分的小镇子是不会有个本地的，你可以在任何时候（从网上）搜寻到的换偶同好会；但根据消息确实有些甚至更小的镇子有些狂乐派对。
“Unlike most luxury large cars, the Volvo S80 seems to be engineered to fly under the radar,” US News & World Report concluded in its review.
“与大多数大型豪华轿车不同，沃尔沃S80好像设计的在雷达下可以飞起来，”美国消息&世界报道在他的评论中总结道。

Scientists would use radar to search for liquids under the ice.
Under his plan the large centralized radar facility proposed for the Czech Republic will not be needed, nor will the earlier generation of ground-based interceptors planned for Poland.

Pro gaming still has managed to fly under the radar as far as mainstream coverage.
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But prior to the release of Borderlands in 2009, Gearbox flew largely under the radar.
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