色氨酸 sè ān suān

DEFINITIONS

  1. tryptophan (Trp), an essential amino acid

CHARACTERS

色 sè
HSK 2
color, tint, hue, shade; form, body; beauty, desire for beauty
氨 ān ammonia; hydrogen nitride
酸 suān
HSK 4
tart, sour; acid; stiff; spoiled