No wonder: Used to say that something is not surprising; It is not surprising or unexpected at all. You can say ‘No wonder’ when you find out the reason for something that has been puzzling you for some time.
As in Brad was Jane’s brother! No wonder he reminded me so much of her!
中文释义: No wonder: Wonder的意思是惊讶，惊奇。No wonder就是毫不奇怪，不足为奇。另外它还用来指某一个困扰自己很长时间的问题，突然得到了解决，有一种如梦初醒、恍然大悟的释然，类似于我们中文语境里的，怪不得、原来是……。后面直接接从句，或者用于It’s no wonder that…中。在非正式英语中that通常都可以省略，No wonder是省略说法。例：It is no wonder he is not hungry. No wonder he is not hungry. 例句：It is no wonder that he should have succeeded. （他成功了是不足为奇的。）