vote of no confidence      
noun [ C usually singular ] uk/ˌvəʊt əv ˌnəʊ ˈkɒn.fɪ.dəns/ us/ˌvoʊt əv ˌnoʊ ˈkɑːn.fɪ.dəns/
 不信任投票
an occasion when most of the members of a parliament or other organization say that they do not support the people in authority and that they disagree with their actions