hit-or-miss (also hit-and-miss)

adj done haphazardly or carelessly; liable to error; random 偶然做出的; 漫不经心的; 容易出错的; 随意的: Long-term planning is always rather a hit-or-miss affair. 凡是定长远的计画都难免出偏差.

hiss, histamine, histogram, histology, historian, historic, historic present, historical, historically, history, histrionic, histrionically, histrionics, hit, hit list, hit man, hit parade, hit upon, hit upon an idea, hit-and-run, hitch, hitch-hike, hitch-hiker, hitchhike, hither, hitherto, HIV, hive, hives, hiya, HM, HMG, HMI, HMS, HMSO, HNC, HND, ho, hoar, hoar-frost,