They control and dominate the Baltic trade, and herring is an important part of that, because herring will keep once it's salted and all that.
他们几乎控制和掌握了整个波罗的海贸易,而鲱鱼则是其中的重要组成部分,因为鲱鱼一旦用盐浸泡过就可长期保存
耶鲁公开课 - 欧洲文明课程节选
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