powerful adversary的用法和樣例：
例句
- I worked hard on an energy plan against stiff opposition, but I had made a powerful adversary in APL, which had offices in most counties.
我頂著巨大的阻力，非常努力地運行一個能源計劃，但我已經將阿肯色電力與照明公司變成了自己的一個勁敵，而這個公司在多數縣裡都有辦事處。 - Thunderaan was a powerful foe, even to an elemental lieutenant such as Ragnaros, and the Firelord was unable to completely destroy him as he had hoped.
桑德蘭即使是對拉格納羅斯這樣的元素長官來說也是一位勁敵，最終炎魔也無法如預期那樣完全摧毀它。
