然而，在这个威胁日益蔓延、使命日趋复杂的世界里，美国不能独自行动。

But in a world in which threats are more diffuse, and missions more complex, America cannot act alone.

youdao

如果你在这个复杂的世界里寻找一个模范人物，那么你就该学学蜜蜂。

If you're looking for a role model in a world of complexity, you could do worse than to imitate a bee.

youdao

在这个变化了的、极其复杂的世界里，对信息的需要是最重要的。

In this changed and complicated world, the need for information is of great importance.

youdao