| 单词 | trap door |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔drop〕Something, such as a trap door on a gallows, that is arranged to fall or be lowered.下落板：被设计降低或落下的东西，如绞刑架的下落板美国传统〔oubliette〕A dungeon with a trap door in the ceiling as its only means of entrance or exit.地下土牢：顶部有一供出入的活板门的土牢美国传统〔scrape〕The earth was scraped away to uncover a trap door.把土刮掉后露出了活板门。朗文当代〔sitting duck〕Nancy knew she'd be a sitting duck when she raised the trap door.南希明白，只要一打开天窗，她马上就会成为受攻击的目标。柯林斯高阶〔trap〕A trap door.通气门美国传统 |
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