Don't buy products that exploit the oceans, such as coral calcium, shark cartilage supplements, and coral jewelry, and if you take fish oil, you can substitute equally healthy flaxseed oil.
不要买利用海洋的产品,如珊瑚钙、鲨鱼骨补品和珊瑚珠宝,如果你要买鱼油,可以买有同等健康价值的亚麻籽油。
Like their close relatives the sharks, the 200-odd species of stingrays are boneless fish that boast skeletons made of tough tissue called cartilage.
刺鳐是鲨鱼的近亲,种类有200多种,善于无骨鱼类,其骨架是由软骨构成的。
Sharks have a different structure to most fish: instead of a skeleton made of bone, I hey have a tough elastic skeleton of cartilage.
鲨鱼与多数鱼类的骨架不同,它有结实、有弹性的软骨骨架,而不是骨头组成的骨架。