我们在伦敦桥停下车来，这是一座双拱桥梁，外延部分在1990年垮塌了。 当时有一对男女被困在桥那一边，只能由直升飞机前来救援。

We stopped at London Bridge, a double-arched formation whose outer span collapsed in 1990, stranding a couple on the other side so that they had to be rescued by helicopter.

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我们立刻前来救援，如果发生任何问题。

We immediately come to the rescue if any problems occur.

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我们立刻前来救援，如果发生任何问题。

We immediately come to the rescue if any problems occur.

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