He stopped and then began again with an effort, lips and jaw moving in exaggerated spasms as if he were trying to extricate some gumlike residue from his teeth.

• 他顿住了一会儿，然后，嘴又重新开始嚅动起来，嘴唇和下颌夸张地抽搐着，仿佛他想极力地挤出牙床残渣。