问题描述：
it has 的中文意思是什么?
我正在写作业,一篇短文里有一个小短句“it has”,懂英语的朋友帮我一下,
那个句子：Although science has made big steps in making food more fit to eat,it has,at the same time,made many foods unfit to eat.
如果有朋友知道这篇短文的翻译（一整篇）,
我正在写作业,一篇短文里有一个小短句“it has”,懂英语的朋友帮我一下,
那个句子：Although science has made big steps in making food more fit to eat,it has,at the same time,made many foods unfit to eat.
如果有朋友知道这篇短文的翻译（一整篇）,
问题解答：
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