以下为句子列表：
英文: 520 Fast food chain have spread to virtually every country around the world.
中文: 快餐连锁店已经遍部到几乎世界上任何一个国家.
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英文: Abstract: Harmful algae can do great harm to organisms even to human through food chain by accumulating in shellfish and fish or by themselves.
中文: 文摘:有害藻类自身或通过食物链在鱼类、贝类等生物体内蓄积，对生物直至人类产生危害。
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英文: Abstract: It was an effective and economical way that the relationship of food chain between eagle and rodent was used to control the latter.
中文: 文摘:利用鹰、鼠的食物链关系招鹰灭鼠，控制鼠类猖獗为害，是草地鼠害防治经济有效的途径。
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英文: After those successes, scientists slowly started working up the food chain from inspects to mice and monkeys.
中文: 在这些成功之后，科学家慢慢的开始按照生物链从昆虫到老鼠到猴子进行传送试验。
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英文: Bacteria are really tiny, and are very good at absorbing mineral nutrients from the environment, so they are at the bottom of just about every food chain on the planet.
中文: 细菌真的很小，而且它们非常擅长从外界吸收矿质营养素，因此，在地球上，它们处于几乎所有食物链的末端。
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