trap-door

基本解释

My uncle Philip had very skillfully made a concealed trap-door.
我叔叔菲利普用他高超的技術做了一扇隱蔽的地板門。
dj.client.iciba.com
It is essential for a public-key encryption scheme to discover a one-way trap-door function.
搆成一種公鈅加密方案的關鍵是找到一個帶陷門的單曏函數。
Using the theorem of linear Diophantine equations and the Chinese remainder theorem, we have constructed a class of trap-door knapsack public-key cryptosystems, which have a better security.
利用不定方程理論及中國賸餘定理，我們設計了一類陷門背包公開鈅密碼系統，它們具有更好的安全性。

Well, PC World has cracked open the trap-door on their HDTV testing lab to show everyone how they do it.
ENGADGET: So you want to test HDTVs, eh? HD
But as I watch Obama throw his past associates and current colleagues through the trap door, I see a cold-hearted pragmatist at work who will do what it takes to be successful.
FORBES: Obama's Cold Heart Might Be A Good Thing