full back 和 wing back 的区别是什么？

【 在 happyws (该干啥干啥) 的大作中提到: 】
: Espanyol look at Santon
: By Football Italia staff
: Espanyol have joined Sampdoria in chasing after Inter full-back Davide Santon.
: ...................
--
FROM 61.186.190.39