radiant

adj.

1. 放热的; 发光的; 辐射的
   • He is doing research on radiant intensity.
     他在研究辐射强度。
2. 喜悦的, 容光焕发的
   • She was radiant with joy.
     她高兴得容光焕发。
   • He gave a radiant smile when he heard the news.
     他听到这个消息后露出欣喜的微笑。
   • Her face was radiant with delight at the good news.
     听了这个好消息, 她的脸上乐开了花。