brighten
/ˈbraɪtən/verb
1- make or become more light使变亮, 使更亮：
no obj. most of the country should brighten up in the afternoon下午全国大部分地区天气都会转晴
with obj. the fire began to blaze fiercely, brightening the room.炉火开始熊熊燃烧, 照亮了整个房间。
1.1
- with obj. make (something) more attractively and cheerfully colourful使更亮丽多彩：
daffodils brighten up many gardens and parks.
水仙为许多花园和公园增色。
1.2
- make or become happier and more cheerful（使）开颜, （使）高兴; （使）活跃：
no obj. Sarah brightened up considerably as she thought of Emily's words想起埃米莉的话, 萨拉变得很开心
with obj. she seems to brighten his life.看起来她使他的生活更加愉快。
词源
Old English （ge）beorhtnian.