show trial
noun [ C ] uk/ˈʃəʊ ˌtraɪəl/ us/ˈʃoʊ ˌtraɪəl/
（并非出于公正目的、而是为影响公众舆论并减少政治阻力而举行的）摆样子公审
a trial organized by a government in order to have an effect on public opinion and reduce political opposition, and not in order to find the truth