fire door ring
... fire fighting ring main 灭火消防环形主管 fire door ring 火门框 fire retardant ring 阻火圈 ...
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火铺屋后不远矗立一个破门框子，屋身烧掉了，只剩这个进出口，两扇门也给人搬走了。
Not far behind the lodge a broken door frame stuck up sharply. The main part of the building had burned down, leaving only this entrance. The two door panels had also been carted away.
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