wéi / qiáng / dǐng / bù / ān / zhuāng / le / dāo / piàn / tiě / sī / wǎng / yǐ / jiā / qiáng / ān / quán / fáng / hù

围墙顶部安装了刀片铁丝网，以加强安全防护。

Razor wire was installed along the top of the wall to improve security.