excursion bus

例句：

1. 1. We took an excursion bus to the nearby beach for a day of fun.
   我们乘坐观光巴士去附近的海滩玩了一天。
2. 2. The tour bus was packed with tourists eager to see the sights.
   旅游巴士上挤满了渴望观光的游客。
3. 3.The sightseeing bus dropped us off at the entrance of the historical site.
   观光巴士把我们送到了历史景点的入口。