lour

To frown; to look sullen.

1. 1.

   To frown; to look sullen.

   皱眉；显得阴沉

2. 2.

   To be dark, gloomy, and threatening, as clouds; of the sky: to be covered with dark and threatening clouds; to show threatening signs of approach, as a tempest.

   阴沉、阴郁和威胁的,如云；天空被乌云覆盖,显示出暴风雨来临的迹象

（天色或云）变得阴沉；乌云密布；呈现暴风雨欲来的凶险景象；皱眉；显得阴沉；阴沉、阴郁和威胁的,如云；天空被乌云覆盖,显示出暴风雨来临的迹象；皱眉；变阴沉

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