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褪黑激素

tuì hēi jī sù

4-character word

What 褪黑激素 means

1. (biochemistry) melatonin

The characters in 褪黑激素

• 褪tuìto take off (clothes); to shed (feathers); (of color) to fade…
• 黑hēiblack; dark; sinister
• 激jīto arouse; to incite; to excite
• 素sùraw silk; white; plain, unadorned

Go deeper

• The four tones and the neutral tone, to read tuì hēi jī sù correctly.
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