You can alias that type into a simpler name and keep using that instead of bringing components into the current namespace (or the global one). I haven't done C++ in some years but this was definitely a part of C++11.
typedef std::pair<std::string, std::string> TStringPair;
std::vector<TStringPair> vec;
typedef std::vector<std::pair<std::string, std::string>> TStringPairVec;
TStringPairVec vec;