Blu-Tack
noun [ U ] UK trademark uk/ˈbluː.tæk/ us/ˈbluː.tæk/
宝贴万用胶，蓝丁胶
a brand name for a soft, sticky substance that can be used more than once to temporarily attach light things to a wall or similar surface
Helga stuck her posters up with Blu-Tack. 赫尔戈用宝贴万用胶把她的海报贴了出来。