[no obj., with adverbial of direction]move or act in an awkward or confused manner 笨手笨脚地进行;跌跌撞撞地前进;踉跄 they bumbled around the house. 他们跌跌撞撞地在屋里乱转。 [as adj. bumbling]his bumbling interventions. 他的拙劣的干涉。
[no obj.]speak in a confused or indistinct way 模糊不清地讲话 ■[with adverbial](of an insect) buzz or hum (昆虫)嗡嗡作响 she watched a bee bumble among the flowers. 她看着蜜蜂在花丛中嗡嗡地飞来飞去。
派生 bumbler noun 语源
late Middle English (in the sense 'hum, drone'): from boom + -le