| 单词 | semi-duration | 
| 释义 | > as lemmassemi-duration   semi-duration  n.  Brit.  , U.S.  , ΚΠ 1719    J. Pound in  Philos. Trans. 1717–19 		(Royal Soc.)	 30 1032  				The Semi-duration of the Eclipse. 1867    G. F. Chambers Descr. Astron.  i. i. 8  				Longer than the semi-duration of the Sun's rotation. < as lemmas  | 
	
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