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。

《柯林斯英汉双解大词典》

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。

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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。

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