但是很不幸的是，许多企业家都没能充分考虑如何定价。

Unfortunately, many entrepreneurs don’t give it enough thought.

youdao

但是很不幸的是，这种转变也很可能会使你疏远一些老朋友。

Unfortunately, this process could also involve leaving some old friends behind.

youdao

但是很不幸的是，这段迅速的进化过程发生于中白垩纪的一千五百万年间，而这段时期的鲜有化石记录。

"But there were a hundred million years of evolution to play with."

youdao

But unfortunately, gas stations, as we all know, they tend to crowd into the same corners, they tend to be on the same road junctions, right?

但是很不幸的是,加油站,如我们所知,它们一般都在设在相同的地点,他们趋向设立于同一个路口,对吧

耶鲁公开课 - 博弈论课程节选

You can brute force it and unfortunately, the so-called Caesar cipher is not very secure because if you assume, for our purposes in English alphabet with 26 characters, say all lowercase for all uppercase, my God, you only have to try like 24, 25, 26 possible rotations until you can figure out what his secret message is.

你可以强行解密但是不幸地是，所谓的凯撒密码不是很安全的,因为如果假设，对于我们的26个字符的字母表,指明所有的小写为大写，我的天，你只要试24，25次，26次就可以解答出,密文的内容。

哈佛公开课 - 计算机科学课程节选