|
A Spanish charity has revealed a unique poster that only reveals an anti-abuse helpline to children. 西班牙一慈善机构最近发明了一张独特的海报，只有孩子才能看到海报上公布的虐童事件求助电话。The poster can only be fully seen when looked at from a child's point of view due to a lenticular printing technique more often seen in novelty postcards. 这种海报运用透镜印刷技术，只有从孩子的角度才能看到海报的完整内容。这种技术多应用在新奇的明信片上。 When a child (or anyone under 1.35m tall) views the poster, they see the full message and helpline number. 当孩子（或不到1.35米高的任何人）看到海报，他们就能看到完整信息和求助电话。 | 
