mugging的复数形式怎么拼写？

n.哑剧，默剧，路劫...

We usually think of a victim of mugging as being someone elderly.我们通常以为被拦路抢劫的受害者是老年人。Mugging is on the increase.抢劫犯罪呈上升趋势。He has been mugging up Russian.他一直在学俄语....

mugging的音标：mugging的英式发音音标为：['mʌgɪŋ]mugging的美式发音音标为：['mʌɡɪŋ]...