He started his career busking outside underground stations.他从在地铁站口卖艺开始他的职业生涯。No busking is allowed on the underground.地铁里禁止卖艺。They spent their free time in Glasgow busking in Argyle Street.他们业余时间在格拉斯哥阿盖尔街卖艺。Passers-by in the area have been treated to some high-quality busking.路过这一带的行人听到过水平很高的街头演唱。