| 单词 | planetary aberration | 
| 释义 | planetary aberration [`plan·ǝ´ter·ē ´ab·ǝ`rā·shǝn]  OPTICS The apparent displacement of an object in the solar system that results from the fact that light takes a certain time to travel from the object to earth, during which time the object travels a certain distance in its orbit.  | 
	
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