253　enlighten和lighten

① enlighten启发，开导，启蒙，教育。

Radio should enlighten the listeners as well as entertain them. 无线电广播既要使听众得到娱乐也要使他们受到教育。

② lighten减轻，使轻松，使明亮；（心境）变得愉快。

Many appliances lighten housework. 许多电器能减轻家务劳动。

His mood lightened when he heard the news. 他听到那消息，心情就变得愉快了。