Once on a bus in Peru, a farmer even tied a sheep to the top of the bus.

有一次在秘鲁的一辆公共汽车上，一位农民甚至把一只羊拴在了公共汽车的顶上。

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We sat on the top deck of the bus.

我们坐在公共汽车的上层。

《牛津词典》

One of the best ways of getting to know the town is to take the bus tour, which provides a wonderful viewing experience from one of our open-top buses.

了解这个城市的最佳方式其一是乘巴士旅游，从我们的敞篷巴士上观赏美妙的景色。

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Off-duty bus drivers are visiting depots in London in an open-top bus to demand extra pay for working during the Olympic Games.

BBC: Bus drivers on open-top protest bus

The open-top bus went through Lakeside, into the town centre, and then back to the Keepmoat.

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Mr Hutchinson described the vehicles as "somewhere between a walking tour and an open-top bus tour".

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