benchmark
n.
also bench-mark, "surveyor's point of reference," 1838, from a specialized surveyors' use of bench, n. + mark, n.1; figurative sense is from 1884.
| 词汇 | benchmark | 
| 词根词缀 | Online Etymology Dictionary benchmark n. also bench-mark, "surveyor's point of reference," 1838, from a specialized surveyors' use of bench, n. + mark, n.1; figurative sense is from 1884. | 
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