The Severn Estuary is home to huge numbers of sprats and salmon, and the twaite shad, a protected migrating species which spawns in the tributaries of the River Severn.
圖像來源，BBC News Chinese，这一点在safew官方版本下载中也有详细论述
Фото: Valentyn Ogirenko / Reuters，详情可参考91视频
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