居然

居然

"居然" means "unexpectedly" or "to one's surprise."

The word '居然' here emphasizes the unexpected nature of the situation where someone is unaware of something significant.

他居然不知道这件事情的真相。

He surprisingly doesn't know the truth about this matter.

In this context, '居然' highlights the unexpected capability or achievement of completing a task rapidly.

你居然能在这么短的时间里完成任务，真是厉害！

You surprisingly managed to complete the task in such a short time; that's amazing!

Here, '居然' conveys surprise regarding an unusual weather occurrence given the current warm conditions.

今天居然下雪了，这个月本来就很暖和。

It's snowing today, which is surprising because this month has been very warm.