2000年真题Text2和2002年真题Text2两处roughly让我困惑

2000年真题Text2和2002年真题Text2两处roughly让我困惑。分别是：


1：2000年真题Text2第二段
Most of us have roughly the same number of offspring. 我们多数人的子女数量大致相同。

2：2002年真题Text2最后一段
What they found, in attempting to model thought, is that the human brain's roughly one hundred billion nerve cells are much more talented — and human perception far more complicated — than previously imagined.
在试图建造思维模型的过程中，研究人员发现，人类大脑中的近1000亿个神经细胞要比以前想像的更聪明，人类的感觉器官也比以前想像的更复杂。

Roughly不是副词吗？为什么它要修饰名词？有这样的用法吗？难道在第一个名子中，roughly是修饰have吗？那么第二个句子中的roughly又应该怎么解释呢？roughly可以修饰名词吗？

例句：1while roughly 22 percent said they have been threatened with physical violence because of their sexual orientation
2 roughly 10,000 American soldiers and 6,000 Iraqis continued to push through villages surrounding Baquba in what commanders described as a large-scale offensive aimed at Sunni extremists

粗略地；约略地
There were roughly 500 people.
大约有500人。
I had roughly four kilometers to go.
我还要走大约4公里。

副词一般用来修饰动词形容词。形式有方式副词,地点方向副词,时间服从,强调副词.等等
你的理解没错的
这里的roughly做强调副词用。可以用来修饰名词，代词，介词短语和从句等，位于所修饰的词之前，就像Even John agreed tocome.类似的。

分享无价！！！！！！谢谢！！！

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