darkening 

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v. ��ڣ���ɫ�����ƻ���ƣ�darken��ing��ʽ��

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n. blackening
a. gloomy��grim

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1. We darkened the room by closing the shutters.
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2. The shadow of the Moon can be seen darkening part of Earth.
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3. The sun sinks across the darkening moors, and my whole world is wrapped in a veil of gold.
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n.
  1. changing to a darker color
  2. becoming dark or darker as from waning light or clouding over
  3. characterized by hopelessness; filled with gloom

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darkening
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The Darkening
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darkening urine
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darkening plant
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darkening ring
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