darkening
['dɑ:kənɪŋ]
n.
暗色化;
v.
（使）变暗( darken的现在分词 );
再不要跨进我的门槛，再不许踏进我的家门;
例句:
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How soon the whale dissolved into its darkening sea.
来自NEWYORKER
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Through the window he admires the darkening sapphire sky.
来自NEWYORKER
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A fine shadow was flung over the deep green meadow, darkening all.
美丽的夜幕已经降临到深绿色的草地上, 一切都给吞没在黑夜之中.
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It was clouding over outside and the lake was darkening.
外面阴云四布,湖上阴暗下来.
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And the outlook for foreign sales is darkening too.
出口销售的前景也黯淡了.
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So why step outside into ever darkening shades of barbarianism?
来自BBC