| 词汇 | estrus |
| 词根词缀 | 词源： 1850, from L. oestrus "frenzy, gadfly," from Gk. oistros "gadfly, breeze, sting, mad impulse" (probably cognate with Lith. aistra "violent passion," L. ira "anger"). Earliest Eng. sense is of "frenzied passion;" first attested 1890 with meaning "rut in animals, heat." |
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