trap door

基本解釋

Its white stripe is visible, but its head is hidden behind the trap door.
身上有白色條紋，但把腦袋躲在陷阱籠門的后面。
As liquid rushes in, the plant sucks in the prey, such as a small crustacean, that triggered the trap door's opening.
當(dāng)像小甲蟲一樣的小蟲觸發(fā)了陷阱門的機(jī)關(guān)，液體就沖了進(jìn)來，植物就卷住了獵物。
When the trap door shuts, the plant excretes mucilage next to a special cuticle around the door, creating a watertight seal.
當(dāng)陷阱閥門關(guān)閉的時(shí)候，植物在閥門周圍的特殊角質(zhì)層上分泌粘液，形成不透水密封墊。

So, what you do is you set up a couple of displays, one where the block is stopped, the other one where you take this away with a trap door and it keeps going.
所以,你可以設(shè)計(jì)幾個(gè)演示,一個(gè)是木塊被擋住了,另一個(gè)是用活門把木塊挪開,使得屏板繼續(xù)上升
耶魯公開課 - 心理學(xué)導(dǎo)論課程節(jié)選
Suppose standing on the bridge next to the fat man, I didn't have to push him, suppose he was standing over a trap door that I could open by turning a steering wheel like that.
假設(shè)我站在橋上，胖子就在我旁邊，我不用去推他，假設(shè)他踩在一扇活板門上方,而活板門可以通過轉(zhuǎn)動方向盤來開啟。
耶魯公開課 - 公正課程節(jié)選

President-elect Obama shows a remarkable ease with which he pushes useful colleagues through the trap door.
FORBES: Obama's Cold Heart Might Be A Good Thing