凯西：呃，我想单人自行车也许比较好。

K: Uh, I think separate bikes might be better.

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在一次从阿根廷到厄瓜多尔的单人自行车旅行中，36岁的辛在玻利维亚南部遇到两位同伴。

On a solo bike trip from Argentina to Ecuador, Sing, 36, met two companions in southern Bolivia.

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业者：如果你们要共骑的话可以选择双人协力车，或者选择两辆单人骑的自行车。

You have a choice of a tandem if you want to ride together, or two separate bikes.

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