Fish were a vital commodity in growing towns and cities, where food supplies were a constant concern.

在不断发展的城镇和城市里，鱼是一种重要的商品，那里的食物供应一直是人们关注的问题。

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Another vital commodity, oil, was on the way down.

另一种重要商品，石油，也在降价。

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Another vital commodity, oil, was on the way down.

另一种重要商品，石油，也在降价。

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