fly-posting
noun [ U ] UK uk/ˈflaɪˌpəʊ.stɪŋ/ us/ˈflaɪˌpoʊ.stɪŋ/
非法张贴海报
illegally sticking a political or other poster (= notice) on a public wall, fence, etc.
fly-poster
noun [ C ] uk/ˈflaɪˌpəʊ.stər/ us/ˈflaɪˌpoʊ.stɚ/
非法张贴海报者；乱贴的广告
a person who goes fly-posting or the poster (= notice) they put up
Fly-posters will be prosecuted. 非法张贴海报者将被起诉。