基本解释n.露齿裂嘴；嘴裂同根派生 英汉例句用作名词 (n.)His mouth is gaping in a kind of rictus of startled alarm.由于受到惊吓，他张着嘴，一句话也说不出来。His face was set in a rictus of death that was somewhat like a smile.他的面容带着亡故后的张嘴结舌，有点像在微笑。