circulatorn.
英 'sɜːkjʊleɪtə | 美 'sɝkjə,letɚ
中文n. 传播者；循环器；循环小数
词根词源
circulator (n.)"one who puts (something) in circulation," 1755, agent noun in Latin form from circulate (v.). Classical Latin circulator meant "peddler, hawker," a sense attested occasionally in English 17c. and after.
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