We refine a more detailed route for that leg of the journey (the first iteration).

我们为这段旅行(第一次迭代)细化出更详细的路线。

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The western route, the most costly leg, still remains on the drawing board.

花费最大的西线至今还停留在制图版上。

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The western route, the most costly leg, still remains on the drawing board.

花费最大的西线至今还停留在制图版上。

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