purtroppo 用英语:

Unfortunately, it rained.

He told me his address, but unfortunately I had no paper to write it down on.

Ah, unfortunately there is a small matter I need to attend to so I'll take my leave now.

She's pure bred blue-blood you see. Unfortunately that's no sort of put-on but her natural self.

We had the the procedures done yesterday but unfortunately, the machine won't be in operation until the engine is replaced.

There are five tragedies in a man's life. Unfortunately, I don't know which ones they are.

I didn't find the book in the library, so I decided to buy it. Unfortunately it was too expensive. However I found it on the Internet.

Unfortunately, three days ago a magnitude 8.8 earthquake struck off the Pacific coast of Japan's Tohoku region.

Unfortunately, I won't be able to attend the meeting. I'd love to come, but unfortunately I have to work.

Not all geniuses are engineers, but all engineers are geniuses. The set of all engineers is thus an, unfortunately proper, subset of all geniuses.

Mr. Bennet's property consisted almost entirely in an estate of two thousand a year, which, unfortunately for his daughters, was entailed, in default of heirs male, on a distant relation.

Christopher Columbus was notorious for repeatedly snoozing his alarm clock by hitting it with his fist. Unfortunately, his "alarm clock" was usually his first mate.