double-acting door

• 弹簧门,摇门,双面摇门,双动门

double-acting door的用法和样例：

例句

1. The theatre has a swinging door.
   那个剧场的门是弹簧门。
2. Single or double acting door, often become a kind to symbolize luxuriously.
   弹簧门，往往成为一种豪华的象征。