| 单词 | measured mile | 
| 释义 | measured mile [`mezh·ǝrd `mīl]  CIVIL ENGINEERING The distance of 1 mile (1609.344 meters), the units of which have been accurately measured and marked.  NAVIGATION A length of 1 nautical mile (1852 meters), the limits of which have been accurately measured and are indicated by ranges ashore; used by vessels to calibrate logs, engine revolution counters, and such, and to determine speed.  | 
	
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