trap-door

英 [t'ræpd'ɔːr] 美 [t'ræpd'ɔːr]

• n. 活板门

英英释义

名词 trap door:

1. a hinged or sliding door in a floor or ceiling

例句

用作名词 (n.)

1. In one corner a ladder went up to an open trap door.
   角落里有一道梯子，通往上面敞开的活板门。
2. Elevator maintenance can be carried out from outside the well through a trap.
   可以通过活板门在电梯运行井道外维修电梯。