- 墨水: ink silver content in coins
- 污迹: smudginess; splodge; splotch ...
- 雨水污迹: rainwater stain; weathering stain
- 污迹: smudginess; splodge; splotch; speckle; smear; stain; smudge 去掉上衣上的污迹 remove smudginess from one's coat
- 水污: water pollution
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