答：对于世界上几十亿人口来说，鱼是一种主要的蛋白质来源，也是食物中的重要一环。
A: For billions of people in the world, fish is a major source of reliable protein and an essential part of their diets.
斯蒂门记录有另一种对有毒的多氯联苯和多环芳烃有抵抗作用海岸物种，那是一种鳉鱼。
Stegeman has been chronicling resistance to toxic PCBs and polycyclic aromatic hydrocarbons in another coastal species, a killifish.
形成杂环胺是动物食品的特征，包括鱼、禽肉如鸡肉，还有蛋类等。
Formation of heterocyclic amines is a unique feature of animals including fish and bird meat such as chickens and eggs.
贝贝是一个鱼娃娃，她寄托了人们对繁荣的期盼，因温和纯洁而闻名。她擅长水上运动，代表了奥运五环中的蓝环。
Beibei is a fish that carries the blessing of prosperity and is known to be gentle and pure. Strong in water sports, she reflects the blue Olymic ring.
根据脂肪烃、多卤联苯、卤代苯和稠环芳烃等80种非极性有机化合物在鱼体中生物富集因子（BCF）的实测数据，建立了有机物在鱼体中生物富集因子的片段常数法估算模型。
Relationship between bioconcentration factor and fragment constants was investigated. A prediction model was developed on the basis of the observed BCF values of 80 non-polar organic compounds.
鱼是最显而易见的污染受害者，但它只不过是从微生物到人类这一长链中的一环罢了。
The most visible victims of pollution, fish, are only a link in a chain from microscopic life to man.
鱼是最显而易见的污染受害者，但它只不过是从微生物到人类这一长链中的一环罢了。
The most visible victims of pollution, fish, are only a link in a chain from microscopic life to man.
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