It is--at least, it puts itself out there as a candidate to be an alternative term that one might use if one got tired of saying "irony" or "paradox."

如果“讽刺“，“悖论“一类的词,用的太多,可以用“朦胧“来替换“

耶鲁公开课 - 文学理论导论课程节选

Do you think that one day we will be able to find an alternative energy?

你觉得有一天我们能找到替代能源吗？

对全球变暖的政策 - SpeakingMax英语口语达人

It's a secret number so that if Julius Caesar scrambled his message with the key 13, well, then the recipient had better know what that number is or realistically, -- and this is why it's kind of hard to buy -- into some of these age old algorithms, -- what would an alternative approach be to figuring out Julius Caesar's messages to his generals if he didn't know that secret number was 13?

它是一个机密的数字，以至于,如果凯撒大帝使用密钥13加密了它的消息，然后接收者最好知道那个数字是什么,实际上--这就是为什么很难,破解这些古老的算法-,有什么变换方法使凯撒大帝的将军,可以解密凯撒大帝的消息，如果他不知道,那个机密数字是13呢？

哈佛公开课 - 计算机科学课程节选

Last day, Professor Ballinger Lewis introduced you to Lewis who taught us that octet stability could be achieved via electron sharing as an alternative to electron transfer.

昨天，ballinger教授,把我介绍给,他教我们八隅律可以,作为电子传递的方式,可以通过共享电子来实现。

麻省理工公开课 - 固态化学导论课程节选