Read Edit View history 始新世 Shǐxīnshì Eocene Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 始新世 · Shǐxīnshì · Eocene 2026/03/04 始新世 Shǐxīnshì Eocene Eocene (geological epoch from 55m-34m years ago) 在始新世时期，地球的气候非常温暖。 noun created sense Mar 4, 2026, 02:25 AM