hit-and-miss

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˌhit-and-ˈmiss (also hit-or-miss) adjective  DISORGANIZEDdone in a way that is not planned or organized 无计划[组织]的 → random The campaign was rather a hit-and-miss affair. 那次运动欠缺周详的计划。

Examples from the Corpus

hit-and-miss• The legal procedure is far too clumsy and hit-and-miss.• a hit-and-miss advertising campaign• The resolution of the many conflicts between farmers and environmentalists remains a hit-and-miss affair.• Quite often though, through various hit-and-miss applications, he would get one of the engines running.• Their copulations can not be the somewhat hit-and-miss gropings practised by the millipedes.• We approach it in a hit-and-miss sort of way instead of through a systematic communication programme.

ˌhit-and-ˈmiss adjectiveChineseSyllable  

planned is done or way a in that organized not Corpus

hit-and-miss
ˌhit-and-ˈmiss (also ˌhit-or-ˈmiss) adjective
done in a way that is not planned or organized ⇨ random:
    The campaign was rather a hit-and-miss affair.

hit-and-missBrE /ˌhɪt ən ˈmɪs/ 🔊NAmE /ˌhɪt ən ˈmɪs/ 🔊 (also ˌhit-or-ˈmiss) adjectivenot done in a careful or planned way and therefore not likely to be successful 粗制滥造的；时好时坏的