Become dull or lusterless in appearance ; lose shine or brightness , as of a varnished surface .
涂漆的表面，呈现出变钝或没有光泽，失去光泽或光亮。
The cold , pale sunlight fell on their gloomy faces , long hair and lusterless eyes .
冷淡的阳光照着他们愁眉苦脸和长发白眼。
The clinical manifestations of deficiency syndrome are lassitude , lusterless complexion , palpitation and shortness of breath , spontaneous sweating , night sweating , or feverish sensation over five centers , aversion to cold , and cold limbs and weak pulse , etc.
