先有鸡或先有蛋（先有鸡还是先有蛋英文怎么说）

　　It's an age-old puzzle that has stumped generations of scientists. But now they believe they have cracked the conundrum of what came first: the chicken or the egg. 　　According to the Daily Express on July 14, British researchers say the chicken must have come first as the formation of eggs is only possible thanks to a protein–called ovocledidin-17 (OC-17) found in the chicken's ovaries. 　　"It had long been suspected that the egg came first but now we have the scientific proof that shows that in fact the chicken came first," said Dr Colin Freeman, from Sheffield University. "The protein had been identified before and it was linked to egg formation but by examining it closely we have been able to see how it controls the process," he added. 　　According to the report, the research project can also give clues towards designing new materials. 　　英国科学家日前宣称，他们终于解决了到底是鸡生蛋在前，还是蛋生鸡在先这一千古迷题。 　　据英国《每日快报》14日报道，英国科学家发现，鸡蛋壳只有在一种名叫OC-17的蛋白质的催化下才能形成，而这种 蛋白质只存在于鸡的卵巢内，由此推断，必然会得出先有鸡，后有蛋的结论。 　　谢菲尔德大学工程材料系博士科林?弗里曼表示：先有鸡还是先有蛋这一问题已困扰人们多年。我们的结果证明先有鸡，后有蛋。人们很早以前就知道蛋白质元素OC-17的存在，但现在我们可以通过仔细观察而了解OC-17如何促进并控制蛋壳形成。 　　据报道，这一课题有可能在工程材料行业等领域发挥重要作用。