trapdoors
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trapdoors
中文翻译
(trapdoor 的复数) n. 地板门, 活板门, 活动天窗
英文解释
plural of trapdoor
n. A lifting or sliding door covering an opening in a roof
or floor.
n. A door in a level for regulating the ventilating current;
-- called also weather door.
词态变化
原型:trapdoor
变形:s