organized in an informal way and without official permission or approval游击的；非正式的；没有官方认可的- Guerrilla actors took to the streets in army fatigues to protest against the war.非正式演员穿着士兵服走上街头举行反战示威。🔊🔊
- guerrilla marketing (= marketing that uses unusual methods in order to achieve the greatest effect for the smallest amount of money)游击营销（用不一般的方式以最少金钱取得最大成效）
- guerrilla gardening (= growing plants on land that you do not own to make it more attractive)游击园艺（在不属于自己的土地上栽种植物以美化环境）
Word Originearly 19th cent. (introduced during the Peninsular War): from Spanish, diminutive of guerra ‘war’.