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单词 theine
释义

WordReference Random House Unabridged Dictionary of American English © 2024
the•ine  (thēēn, -in),USA pronunciation n. 
  1. caffeine, esp. in tea.
  • Neo-Latin the(a) tea + -ine2
  • 1830–40

Collins Concise English Dictionary © HarperCollins Publishers::
theine /ˈθiːiːn -ɪn/ n
  1. another name for caffeine, esp when present in tea
Etymology: 19th Century: from New Latin thea tea + -ine²
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