他手触额发假装尊敬。He touched his forelock in mock deference.可是他已经宣布,只要她把额发弄成刘海,他就要把她的头发全剃光.But he had declared that he would shave her whole head if she banged her forelocks....

“额发”的英语可以翻译为：forelock，foretop ...