His name is Dean Naslund, and both his father and his grandfather worked on the ditch.

他叫迪安·尼斯伦，他的父亲和祖父都参与过水渠的建设。

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"As with all marine issues you do not see what is down there and sea bottoms are mostly neglected because in general people think there is no life, " said Inger Naslund, from environmental group WWF Sweden.

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