bus available

例句：

1. 1. We need to catch the next bus to the airport.
   我们需要赶下一班去机场的公交车。
2. 2. The old lady sat on the bus for hours.
   那位老妇人在公交车上坐了几个小时。
3. 3. I'll take the bus to work this morning.
   我今天早上将乘公交车上班。