full back

例句：

1. 1.The full back was the key to our victory.
   全后卫是我们胜利的关键。
2. 2. The full back made a crucial tackle in the game.
   全后卫在比赛中做出了关键的抢断。
3. 3. The full back is responsible for defending the goal.
   全后卫负责防守球门。