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.

youdao

他们的逻辑推论是北京和新德里应该像骑双人自行车一样协作。他们给了一个最近的例子：在哥本哈根气候大会上的共同位置。

Their 'logical' conclusion is that Beijing and Delhi should work in tandem. They give a recent example: the common position at Copenhagen Summit on Climate Change.

youdao

他终于和我一起骑双人自行车。

At last he had to ride the tandem bicycle with me.

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