unstuck
adjective uk/ʌnˈstʌk/ us/ʌnˈstʌk/
(NOT ATTACHED)
[ after verb ]未粘住的；脱离的；松开的
no longer stuck
The packing tape on the box came unstuck and some of the contents fell out. 包裹上的胶带开了，一些东西掉落出来。
(NOT SUCCESSFUL)
come unstuckmainly UK informal 遭受挫败
to experience difficulties and fail
It was in the third round of the championships that they came unstuck. 他们是在锦标赛的第3轮被淘汰出局的。