Overprinting is used by applying color engravings and inkline engravings successively to provide a compelling effect.
印制时采用版套印，先色版后黑线条版，画面效果十分明朗。
2
The polling officer didn't even raise her head. After dipping a plastic straw into a bottle of purple ink, she drew a blotchy line down the middle finger of my left hand.
选举官头也不抬，用塑料棒沾了紫色墨水就在我左手的中指上抹下一条污渍。
3
The security features of the former 10, 000 yen notes were the watermark, the use of ultrafine line printing, and luminescent ink.