一个打开的活板门的例子，露出了背面。
An example of an open trapdoor, shown with its back to a block.
她从舞台前面地板上的活板门里爬了出来。
She came crawling out of a trap-door in the front of the stage.
一个关闭的活板门的例子，靠在相连的方块上，露出顶部。
An example of an open trapdoor, shown with its back to a block.
一个关闭的活板门的例子，靠在相连的方块上，露出顶部。
An example of a closed trapdoor, shown flat against the adjacent block.
一个关闭的活板门的例子，靠在相连的方块上，露出顶部。
An example of a closed trapdoor, shown flat against the adjacent block.
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