\\\"staring with lackluster eyes\\\"
\\\"lusterless hair\\\"
造句
用作形容詞(adj.)
The audience was disappointed and rather angry when the famous musician performed in a lackluster manner after arriving late for the concert. 這位著名的音樂家演出遲到后平平淡淡地表演了一番，觀眾很失望，非常生氣。