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海胆：一种属于海胆纲的棘皮动物，包括沙钱和海胆。 Echinoid: an echinoderm of the class echinoidea which includes the sand dollars and sea urchins. | ||
海星实际上是棘皮动物，和海胆和饼海胆是近亲。 Popularlyknown as starfish, sea stars are actually echinoderms, closely relatedto sea urchins and sand dollars. | ||
海獭是海胆的主要捕食者。 Sea otters are the major predators of sea urchins. | ||
火海胆鲜红的颜色警告捕食者它的刺有毒。海獭是海胆的主要捕食者。 The bright red color of a fire urchin warns predators that its spines are poisonous. Sea otters are the major predators of sea urchins. | ||
岩石龙虾以海胆为食，而岩石龙虾密度的增加正好与海胆数量的显著减少相吻合。 Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins. | ||
这是一种即食海胆食品的制备方法。 This is a preparation method for an instant sea hedgehog food. | ||
海獭的减少会使海胆的数量增加，因为海獭以此为食，从而增加海胆对海藻林的食草压力。 Fewer otters would have allowed sea urchin populations on which the otters preyed to expand and the urchins' grazing pressure on kelp forests to increase. | ||
海胆也许最出名的是它们的刺甲。 Sea urchins are perhaps best known for their armor of spines. | ||
他们比较了果蝇、海胆、公鸡、鱼类和人类的基因。 They compared sperm from a fruit fly, sea urchin, rooster, fish and human. | ||
长期摄食鲜海藻类的海胆生殖腺味道甜美，口感上佳。 The urchins feeding on fresh sea algae produce germens tasting delicious. | ||
