vi.[(+up)]

1. 明亮，变明亮；闪亮，生辉
   The sky brightened after the storm.

   暴风雨过后天空明亮起来了。

2. 快乐高兴，开颜；活跃
   Ruth's face brightened.

   鲁丝脸上露出喜色。

vt.[(+up)]

1. 使明亮；使闪亮，使生辉
   Sunlight brightened the room.

   阳光使房间明亮起来。

2. 使快乐高兴，使开颜；使活跃
   Her presence greatly brightened up the evening party.

   她的出席使晚会大为活跃。