-pretendtoplaytheYu(awindinstrument)inordertomakeupthenumberforanorchestra--tobeincludedinagroupjusttofillinavacancy;actasastopgap;bedraggedintoswellthetotal;fillapostwithoutrealqualifications;holdapostwithoutqualifications;justfillupavacancy;makeupanumberwithoutactivework;passoneselfoffasoneoftheplayersinanensemble--tobetherejusttomakeupthenumber(usedofincompetentpeopleorinferiorgoods);putinmenwhocannotwork:
Iamnotgoodatsinging.I'mherejusttomakeupthenumber.我不会唱歌，我在这儿只是滥竽充数。