Infrared light curtain is applied to area security.
红外安全光幕是一种区域防护技术。
Nowdays, the multilateral security cooperation system, represented by CSCE, is the most effective way to solve area security in this world.
现今世界上，以欧安会为代表的多边安全合作模式是解决地区安全最有效方式。
Nowdays, the multilateral security cooperation system, represented by CSCE, is the most effective way to solve area security in this world.
现今世界上，以欧安会为代表的多边安全合作模式是解决地区安全最有效方式。
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