问题补充：
口语里的Speaking of the 能具体解释下,再给我个例子么?
答案：
something that you say when a person you are talking about arrives and you are not expecting them.
ex:when I talked about the bored JAVA class to my friend,the JAVA teacher is coming,so my friend said to me\ speaking of the devil\.
======以下答案可供参考======
供参考答案1:
speak [talk] of the devil and he will [is sure to] appear
讲人人到, 讲鬼鬼到
也就是我们所说的说曹操，曹操就到
供参考答案2:
是说到曹操，曹操就到。指我们刚提到他/她，他/她就出现了。
供参考答案3:
something that you say when a person you are talking about arrives and you are not expecting them.
ex:when I talked about the bored JAVA class to my friend, the JAVA teacher is coming, so my friend said to me speaking of the devil.
