1. Sunlight brightened the room.
    阳光使房间明亮起来。

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2. Her presence greatly brightened up the evening party.
    她的出席使晚会大为活跃。

3. These flowers brightened the classroom.
    这些花使教室生辉。

1. Ruth''s face brightened.
    露丝脸上露出喜色。

2. His face brightened up.
    他脸上露出了喜色。

1. 控制色彩的明暗：slice 切片图 | brighten 控制色彩的明暗 | colorbar 色彩条状图

2. brighten在线翻译

2. [动]使亮或较亮.抛光.打磨：brake plunger (自动变速器)制动器活塞 | brighten [动]使亮或较亮.抛光.打磨 | brightener 抛光剂.光亮剂.上光蜡

3. 变亮：brighten up 发亮 | brighten 变亮 | brightly 明亮地

4. 使发亮 使高兴：briefly短暂的 M | brighten使发亮 使高兴 M | brilliant 卓越的 聪明的 M

1. 开颜；露出喜色；快乐起来
    If someone brightens or their face brightens, they suddenly look happier.

    e.g. Seeing him, she seemed to brighten a little...
           看到他后，她似乎露出点儿喜色。
    e.g. ''Oh, we''d love to!'' cried Nancy, her face brightening.
           “哦，我们很乐意！”南希面露喜色，大声说道。

2. （眼睛）发亮，放光
    If your eyes brighten, you suddenly look interested or excited.

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    e.g. His eyes brightened and he laughed...
           他眼睛一亮，笑了起来
    e.g. Her tearful eyes brightened with interest.
           她含着泪水的双眼因为好奇而闪闪发亮。

3. 使生色；为…增辉添彩
    If someone or something brightens a place, they make it more colourful and attractive.

    e.g. Tubs planted with wallflowers brightened the area outside the door.
           桂竹香盆栽为门外的景致增色不少。

4. （使）好转；（使）变得乐观
    If someone or something brightens a situation or the situation brightens, it becomes more pleasant, enjoyable, or favourable.

    e.g. That does not do much to brighten the prospects of kids in the city...
           那并不能使城里孩子们的前途更光明些。
    e.g. It is undeniable that the economic picture is brightening.
           不可否认经济状况正在好转。

5. 照亮；（使）变明亮
    When a light brightens a place or when a place brightens, it becomes brighter or lighter.

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    e.g. The sky above the ridge of mountains brightened...
           山脊上方的天空变得明亮起来。
    e.g. The late afternoon sun brightened the interior of the church.
           傍晚的太阳照亮了教堂内部。

6. （天气）放晴
    If the weather brightens, it becomes less cloudy or rainy, and the sun starts to shine.

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    e.g. By early afternoon the weather had brightened.
           中午刚过，天就放晴了。

1. make lighter or brighter

    e.g. The paint will brighten the room

    Synonym: lighten uplighten

2. become clear

    e.g. The sky cleared after the storm

    Synonym: clear upclearlight up