untouchables

He believed the police would never arrest him, that he was untouchable.

他相信警察不可能逮捕他，他是碰不得的。

Coventry City have proved untouchable this season - they've just won their sixth consecutive game.

本赛季考文垂城队已经证明是无法击败的——他们刚刚取得了6连胜。