退黑激素
Traditional form:
退黑激素
Pinyin (reading):
tuìhēijīsù
Definitions:
- melatonin
Characters:
- 退 - to retreat, to step back, to withdraw
- 黑 - black; dark; evil, sinister
- 激 - to arouse, to incite; acute, sharp; fierce, violent
- 素 - plain; white; vegetarian; formerly; normally
Traditional characters: