| 单词 | Lower Austral life zone | 
| 释义 | Lower Austral life zone [`lō·ǝr ¦ȯs·trǝl `līf ´zōn]  ECOLOGY A term used by C.H. Merriam to describe the southern portion of the Austral life zone, characterized by accumulated temperatures of 18,000°F (10,000°C).  | 
	
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