他是他足球队的关键防守球员。

He is a key ___defender for his soccer team.

作为一名防守球员，她的主要工作是阻挡射门。

As a ___defender, her main job is to block shots.

球队的防守球员在比赛中努力防止任何进球。

The team's ___defenders worked hard to prevent any goals during the match.