the act of fighting an imaginary enemy by hitting the air with your hands

He displayed little fatigue in his workout, which started with shadowboxing in front of a mirror. 他在镜前进行空拳练习作为训练的开始，并没有疲劳的迹象。

Do something as simple as jumping jacks or shadowboxing. 做一些简单的动作，如开合跳或空拳练习。

the act of pretending to argue about or deal with a problem, often to avoid dealing with the most important problem

All this may be political shadowboxing, but it will make it more difficult to reach agreement on important legislation. 所有这些可能都是在政治上打太极，但它将就重要立法达成协议变得更加困难。