free-range
adj.
1960, from free range (n.) "open space available for free movement" (especially of domestic animals), 1821; see free, adj. + range, n.. As a noun from 1912.
| 词汇 | free-range | 
| 词根词缀 | Online Etymology Dictionary free-range adj. 1960, from free range (n.) "open space available for free movement" (especially of domestic animals), 1821; see free, adj. + range, n.. As a noun from 1912. | 
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