make or become black; "The smoke blackened the ceiling"; "The ceiling blackened" 同义词：melanize, melanise, nigrify, black,
burn slightly and superficially so as to affect color; "The cook blackened the chicken breast"; "The fire charred the ceiling above the mantelpiece"; "the flames scorched the ceiling" 同义词：char, sear, scorch,
例句与用法
1.
The solid decomposed rapidly with blackening . 固体迅速分解并变暗。
2.
She attempts to blacken her ex-husband's character . 她企图毁谤她前夫的品格。
3.
Thermopile is usually a blackened thermal detector . 热堆一般是个涂黑了的热探测器。
4.
The wall was blackened by smoke . 墙熏得黑糊糊的。
5.
The tomato vines had blackened and the red globes had burst . 番茄藤已变黑，颗颗鲜红的番茄裂纹绽开。
6.
The larks were silent, the young leaves of the early trees smitten and blackened . 百灵鸟沉默了，幼树的嫩芽也被打得发黑。
7.
Silver compounds which became blackened by sunlight were known in the 18th century . 十八世纪人们业已发现银化物遇阳光会变黑。
8.
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。
9.
Should you hear my name blackened and maligned, will you credit the aspersion ? 要是你听见我的名誉受到诽谤，你会相信那谗言吗？
10.
After development, incoming light produces blackened silver granules in the layer . 显影后，入射光就在表层产生了发黑的银粒子。
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