bipolar mask bus

例句：

1. 1. The bipolar mask bus is a popular mode of transportation in our city.
   双极性面具公交车是我们城市流行的交通工具。
2. 2. The bipolar mask bus has been designed to provide a more comfortable and environmentally friendly experience for passengers.
   双极性面具公交车被设计成为乘客提供更舒适和环保的体验。
3. 3. The bipolar mask bus service is available in all major cities across the country, providing easy access to public transportation.
   双极性面具公交车服务在全国所有主要城市都可用，为公众交通提供了便利。