英文是：on the road.
解释：
on the road 英[?n ? ro?d] 美[ɑn ?i r?d]
[词典] 乘汽车旅行; 在走向…的路上; 巡回演出; 在马路上
[例句]A nail on the road punctured the tyre.
在马路上的钉子把车胎戳穿了。
A bus is parking on the road.
路上停着一辆公***汽车。
When he's out on the road, office calls are forwarded to the cellular phone in histruck
他在路上时，打到办公室的电话会转接到卡车里的移动电话上。
The skills and logistics of getting such a big show on the road pose enormouspractical problems
搞如此大型的巡演，无论是技术上还是物流上都面临着巨大的实际问题。
One of them would keep a look-out on the road behind to warn us of approachingvehicles
他们中会有一人看着后面的路，提醒我们注意过来的车辆。