That is the best way to describe it – serendipitous!

用Serendipitous（机缘巧合的）形容这件事情再贴切不过了！

" It was serendipitous that it happened so quickly for us, " he said.

" 对我们来说，这一切发生得如此之快，真是意外之喜，" 他说。

From a puzzle in need of solutions to a more serendipitous path of discovery.

从需要解决方案的难题到不经意的探索之路。

The adjective form of the word is even more fun to say -- " serendipitous" !

而它的形容词形式——" 偶然发现的" 用起来更有意思！

Serendipitous encounters in dining halls and common rooms will lead to engaging conversations and enduring friendships.

在学校的食堂和公共休息室中，你们也可以在缘分的际遇中碰撞出有趣的对话，并收获长久的友谊。

But then I think, perhaps it's precisely because of their serendipitous nature that certain films become classics.

但转念一想，或许正是因为其偶然性，某些电影才成为了经典。

In old age, even if curiosity and charisma remain undimmed, frailty makes new serendipitous connections harder to establish.

到了老年，即使好奇心和魅力丝毫不受影响，脆弱也会使新的邂逅更难建立。

That is the best way to describe it – serendipitous! I didn't plan on quitting my banking job.

意外收获（serendipitous）！我没计划辞掉我的银行工作。

So this was a very serendipitous discovery that we did.

所以这是我们所做的一个非常偶然的发现。

In fact, many scientific advances have occurred when serendipitous failures in one field address the constraints of another.

事实上，当一个领域的偶然失败解决了另一个领域的限制时，许多科学进步就出现了。