Nancy knew she'd be a sitting duck when she raised the trap door.
南希知道，当她抬起陷阱门时，她就会成为被攻击的目标。
When the trap door shuts, the plant excretes mucilage next to a special cuticle around the door, creating a watertight seal.
当陷阱阀门关闭的时候，植物在阀门周围的特殊角质层上分泌粘液，形成不透水密封垫。
Aunt Em, badly frightened, threw open the trap door in the floor and climbed down the ladder into the small, dark hole.
爱姆婶婶十分害怕，打开地板上活动的门，爬下梯子，躲到那又小又黑的地洞里去。
Police later found more than 100 pairs of stiletto shoes hidden behind a trap door at the printing works where he was employed.
后来警察在劳埃德受雇的印刷厂的一个暗门后面，发现了藏着的100多双细高跟鞋。
As I sat staring at the candle and smoking I heard a slight noise under the trap door, behind my back.
我一边吸烟，一边在那里呆看放在桌上的蜡烛火，忽而听见梯子口上起了响动。
It was reached by a trap door in the middle of the floor, from which a ladder led down into the small, dark hole.
在地板的中央，装着一扇活动的木门，那里有一座梯子，走下去就到了那又小又黑的地洞里。
The main umbrella has trap door on the top, the secondary umbrella covers the trap door, and the spring presses the secondary umbrella.
主伞的顶部开有“天窗”，“天窗”的上端罩有副伞，副伞的上端压有弹簧。
Trap door structure, pop up structure, and assemblage of listric thrust, dragged anticline and dragged syncline are most favorable to the accumulation of oil and gas.
滚板构造、冲起构造和铲形逆断层与牵引背斜、牵引向斜组合对油气的聚集最为有利。
It's based on the idea of mathematical "trap-door" functions, which are easy to compute in one direction but very difficult to compute in the reverse direction.
它所基于的理念是数学上的“trap - door”函数，它可以沿着一个方向轻松地进行计算，但是很难从相反的方向进行计算。
My uncle Philip had very skillfully made a concealed trap-door.
我叔叔菲利普用他高超的技术做了一扇隐蔽的地板门。
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.
利用不定方程理论及中国剩余定理，我们设计了一类陷门背包公开钥密码系统，它们具有更好的安全性。
She came crawling out of a trap-door in the front of the stage.
她从舞台前面地板上的活板门里爬了出来。
The tear fault intersected with low angle normal fault or thrust fault can form some traps, e. g. trap-door structure trap.
撕裂断层与低角度正断层或逆冲断层相交时常形成有利圈闭，如活板构造等。
The tear fault intersected with low angle normal fault or thrust fault can form some traps, e. g. trap-door structure trap.
撕裂断层与低角度正断层或逆冲断层相交时常形成有利圈闭，如活板构造等。
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