双目无神 meaning in Chinese

lack lustre in one's eyes; one's eyes are lustless

Her face was wrinkled , her upper lip had sunk , and her eyes were dim
她脸上堆满了皱纹，上嘴唇瘪着，双目无神。
Could anyone have been converting nana ? no , it was impossible ! but she sat quite still and with absent looks once more plunged into dreamland , where the vision of an extremely wealthy and greatly courted nana rose up before her
可是娜娜呆在那里，一动也不动，陷入沉思之中，双目无神，脑海中出现一个富有而又受人尊敬的娜娜的幻影。