单词 | long-period |
释义 | > as lemmaslong-period long-period adj. ΚΠ 1850 Catal. Libr. Royal Astron. Soc. 33 On a long period inequality in the Earth's motion, by Pontecoulant. 1903 A. M. Clerke Probl. Astrophysics 348 The typical long-period variable is Mira Ceti. 1964 E. Salisbury Weeds & Aliens (ed. 2) iv. 86 The degree of permanence in any one habitat or area may vary with long-period climatic fluctuations. 2010 D. A. Rothery Planets: Very Short Introd. i. 15 Those are ‘long-period’ comets, and appear to have been dislodged from an ill-defined shell surrounding the Sun..known as the Oort Cloud. < as lemmas |
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