He's interested in sailing and learns about sailing on lakes, and ponds, and rivers.

他喜欢航海,并在湖泊,池塘,河流里学习航行

耶鲁公开课 - 欧洲文明课程节选

They served him on gold plates with gold silverware, and he had huge ponds stocked with not only freshwater fish but saltwater fish.

因为子爵用金盘子及金银器皿来款待他,在他的城堡外面有一个巨大的池塘,里面除了河鱼,甚至还有海鱼

耶鲁公开课 - 欧洲文明课程节选