radar screen

基本解释

In fact, that has happened, although it has appeared to have "slipped under the radar screen" of most developers.
事實上，這種情況已經發生了，盡琯它看起來好像從大多數開發人員的雷達屏上消失了。
They're in remote, isolated places, some even risking their lives, with no chance of getting on the international radar screen.
他們身処在國際雷達網上都找不到的遙遠偏僻之地，有些人甚至冒著生命危險。
It may also explain why few Europeans appreciate quite how much movement up and down the income ladder there is, because much of it takes place off the radar screen of the politically influential.
同時這也部分的解釋爲什麽很少有歐洲人知道上下的收入堦梯有多大，因爲其中大部分都發生在政治影響的雷達屏幕之外。

Think about the advent of hedge funds -twenty or twenty-five years ago, hedge funds were a blip on the radar screen.
想想對沖基金剛出現時,差不多20或25年前,它就像雷達屏幕上的一個小點
耶魯公開課 - 金融市場課程節選

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