three fold block 三轮滑车 ; 三饼滑车
four fold block 四轮滑车
treble-fold block 三饼滑车
three-fold block 三轮滑车
fold block mountain 褶皱块状山
Fold block opportunely 巧叠石块
fold-wedge block uplift 褶皱楔体块状上升
fold block
折叠块
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It can fold in on itself to become a completely sealed concrete block, preventing any of the undead from getting in.
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