blackening
英 美
The married women of Shitamachi maintained the custom of blackening their teeth.
下町的已婚妇女保留了染黑牙齿的习俗。
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。
Here's a video to flesh out any curiosities you may have about the blackening of the bride.
这里有一个视频可以把你对把新娘弄黑的好奇具体化。
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