在ubuntu 14.4上安装libpcre3 dev时出错

我想在Ubuntu14.4上安装libpcre3 dev，但是当我在中键入这个命令

sudo-apt-get-install-libpcre3 dev

时，出现如下错误：

 Some packages could not be installed. This may mean that you have
 requested an impossible situation or if you are using the unstable
 distribution that some required packages have not yet been created
 or been moved out of Incoming.
 The following information may help to resolve the situation:

The following packages have unmet dependencies:
libpcre3-dev : Depends: libpcre3 (= 1:8.31-2ubuntu2) but 1:8.31-2ubuntu2.1 is to be installed
E: Unable to correct problems, you have held broken packages.

我怎样才能修复它？

---

强制执行正确的版本。

请帮助我的朋友

sudo apt-get install libpcre3=1:8.31-2ubuntu2 libpcre3-dev=1:8.31-2ubuntu2