Second, explain what this unmet need means.

第二，说明未满足的需求意味着什么。

People complain because they have an unmet need.

人们之所以要抱怨，是因为其要求没有得到满足。

Do you think there is an unmet need for books about software management?

你认为软件管理方面还有未满足的需求么？

Still, only a few companies and academic groups are addressing this unmet need.

只有少数几家公司和学术团体正在解决这个未满足需求。

Apple products are rarely first to market, but they always speak to a real, unmet need.

苹果的产品并不是首先立足于市场的，而是为了满足正真的没有被满足的需求。