Families live in mud-built huts along the Niger River, where fishermen in paddle-powered boats cast nets for catfish and carp.
沿着尼日尔河分布着各式家庭，那里驾着划桨船的渔夫撒网捕捞鲶鱼和鲤鱼。
Asian carp—including thecommon, black and bighead variety—were brought to the U.S. in the 1970sas live vacuum cleaners meant to remove algae and suspended matter fromponds.
上世纪七十年代，作为清除池塘中藻类和漂浮物质的活真空清洁器，亚洲鲤鱼——包括普通、黑色和大头品种——被引入美国。
鲤鱼生活在湖里。
So I tell her penguins are so old, they have outlived the dinosaurs. I tell her 1 carp has no natural life span and could technically live forever.
于是我告诉她，企鹅是很古老的动物，它们的历史比恐龙更久远。我告诉她，鲤鱼没有自然寿命，所以严格来说，它能够长生不死。
The symbiotic relationship between carp fish as well as amphibians that live in rice paddies create positive feedback loops.
鲤鱼和生活在水田里的两栖动物间的共生关系形成了正向的反馈回路。
The symbiotic relationship between carp fish as well as amphibians that live in rice paddies create positive feedback loops.
鲤鱼和生活在水田里的两栖动物间的共生关系形成了正向的反馈回路。
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