| 单词 | four-track | 
| 释义 | > as lemmasfour-track  d.  To lay a track on or for (a railway); to furnish with a line of rails. Only in compounds, as  to double-track,  four-track,  single-track. U.S. ΘΚΠ society > travel > rail travel > railway system or organization > furnish with railway			[verb (transitive)]		 > lay track on or for track1874 1874    Bay State Transp. League, Bill 		(Boston, U.S.)	 8  				It will cost to single track the Massachusetts Central..$3,000,000. It will cost to double track the same an additional $2,000,000. < as lemmas  | 
	
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