英语翻译Which came first,the chicken or the egg?This is one of l

英语翻译
Which came first,the chicken or the egg?This is one of life’s oldest questions and people have been debating about it for thousands of years.Now scientists believe they have solved this puzzle.Researchers from Sheffield and Warwick Universities in England discovered the answer by chance.They used a super computer to observe the shell-making process while a new shell was froming.Then they found one protein called OC17 that is necessary for forming eggshell.This is only found inside a chicken’s body,which is proof that the chicken came first.The team was originally looking at how animals and birds make eggshells but suddenly made their surprising discovery.
只需翻译“The team was originally looking at how animals and birds make eggshells but suddenly made their surprising discovery.” originally是修饰哪个词还是整个句子的?