Wind can make it easier to hear something or smell something from a long distance away. The figure of speech means to hear of something or to become aware of something. “I caught wind of what was happening and came over as soon as I could.”
得到消息;聽到風聲
風可以讓聲音或者香味從很遙遠的地方輕易地傳達過來;照字面上來說”catch”是捕捉的意思, “捕捉住風”就變成”得知消息;當心某事”的意思:當事情發生之時我一聽到風聲就盡我所能地趕來了。