shadowbox
verb [ I ] uk/ˈʃæd.əʊ.bɒks/ us/ˈʃæd.oʊ.bɑːks/
与假想敌打空拳
to fight an imaginary enemy by hitting the air with your hands
UK（常为避免处理最重要的问题）假装争论（或处理）某个问题
to pretend to argue about or deal with a problem, often to avoid dealing with the most important problem
The main political parties are merely shadowboxing, instead of tackling the real economic problems facing this country. 各主要政党只是出虚招，而不是处理该国真正面临的经济问题。