Walking is something you can do with others, in the sense that it can be a joint activity,a joint undertaking.

走路是一件你能和他人一起做的事，这是一个共同合作的行为和事件。

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These joint undertakings are like,well, you might think of them analogous to playing chamber music with a string quartet.

这种共同行为，就像是用弦乐四重奏演奏室内乐。

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