据信，最大的成本是船只必须避开危险区域绕道而行所产生的成本。

The biggest costs are believed to have come from having to reroute ships to avoid risky areas.

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我们为了避开洪水得绕道而行。

We had to make a detour round the floods.

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异性土壤所形成的腐蚀电池，具有强烈腐蚀的特点，类似这种地带应在勘察设计时尽量避开，绕道而行。

The corrosive cells formed in non-isotropic soil are characterized by their intense corrosive nature, and so the like zone should be kept away as much as possible in survey and design.

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