blackening
英
['blækənɪŋ]
美
['blækənɪŋ]
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n.
涂黑；烧黑；变黑；炭粉；黑度
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动词blacken的现在分词形式.
Noun:
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changing to a darker color
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用作名词 (n.)
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Hellish flames billowed upward, blackening the groaning roofbeams.
地狱般的火焰向上翻滚着巨浪，烧黑了房梁，发出嘎吱声。
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Quite significantly, there was no blackening of the emulsion at the mirror's surface.
十分引人注意地，在反射镜表面的乳胶没有变黑。
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The output signal from the detector may be the blackening of a photographic emulsion.
探测器的输出信号可以是照相乳胶的黑度。
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