Birkenstock
noun [ C usually plural ] trademark uk/ˈbɜː.kən.stɒk/ us/ˈbɝː.kən.stɑːk/
勃肯鞋（环保人士常穿的一种很舒适的鞋）
a brand name for a type of shoe or sandal (= open shoe) that is very comfortable, is made from natural materials, and is thought to be typically worn by people who care a lot about the environment
Birkenstock sandals 勃肯凉鞋
hippy, Birkenstock-wearing liberals 穿勃肯鞋的自由主义嬉皮士