不料 (bú liào): โดยไม่คาดคิด

The weather was nice when I left home in the morning, but unexpectedly it started pouring in the afternoon, and I didn't even have an umbrella.

He had planned to go hiking on the weekend, but unexpectedly he came down with a fever on Friday night and had to cancel the plan.

We thought this exam would be easy, but unexpectedly the questions were much harder than usual, and many classmates didn't finish.

After graduation she always wanted to be a teacher, but unexpectedly she ended up working at a computer company, and she's doing extremely well.

I followed the map for half an hour, but unexpectedly I was going completely the wrong way, so I had to ask a police officer on the street for directions.