The second is that America's role as the single pole of a unipolar world is inevitably coming to an end.

第二种变化在于，美国所扮演的单极世界中唯一一极的角色正在不可避免地走向终结。

youdao

Both ultimately triumphed in their epic struggles and found themselves the lone superpower in a unipolar world.

它们都最终在史诗般的斗争中取得了胜利，并且于此发现它们已处于世界唯一超级大国的地位。

youdao

And if we move from a U.S. unipolar world to something else, that something else may well be a multipolar world.

FORBES

Backing out of the reserve currency issue and up to the arguably more profound level of culture and belief, China is not interested in a unipolar world.

FORBES: Crossroads for the Sole Superpower

And the supposed unipolar moment, when America was left to bestride a single-superpower world?

ECONOMIST: Welcome to the new world disorder