Definitions

[1] vt. 照亮, 点亮, 减轻, 使轻松, 闪出

[2] vi. 发亮, 打闪, 变轻

[3] [机] 减轻, 照亮, 发光

[ 'laitn ]

1. It was just a joke. Lighten up!
   只是个玩笑。放松点!
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