double-bus

例句：

1. 1. The double-bus is a popular mode of transportationin our city.
   双层巴士是我们城市流行的交通工具。
2. 2.The double-bus has become a symbolof modern transportation.
   双层巴士已成为现代交通的象征。
3. 3.The double-bus service provides convenient transportationfor the elderly and disabled.
   双层巴士服务为老年人和残疾人提供了便捷的交通方式。