verb · to attack physically, militarily, or to take the offensive

我军已将城市重重包围，但目前围而不攻。

verb · to accuse, criticize, or attack someone's character or faults

在辩论中，他不应该在公开场合攻人之短。

verb · to study a subject intensely or specialize in a field

他在大学里攻的是法律专业，对合同法很熟悉。

verb · the active or dominant partner in a male-male relationship (LGBT slang)

很多读者在讨论这两个角色谁才是攻。