1580s, "flowing freely" (of water), also, of speakers, "able and nimble in the use of words," from Latin fluentem (nominative fluens) "lax, relaxed," figuratively "flowing, fluent," present participle of fluere "to flow, stream, run, melt," from extended form of PIE root *bhleu- "to swell, well up, overflow" (cognates: Latin flumen "river;" Greek phluein "to boil over, bubble up," phlein "to abound"), an extension of root *bhel- (2) "to blow, inflate, swell;" see bole. Used interchangeably with fluid (adj.) in 17c. in the sense "changeable, not rigid." Related: Fluently.
双语例句
1. He is a fluent speaker of Hebrew.
他说一口流利的希伯来语。
来自柯林斯例句
2. She's fluent in French and German. She also speaks a little Italian.
她的法语和德语讲得流利，也会说一点意大利语。
来自《权威词典》
3. She's fluent in Polish.
她的波兰语很流利。
来自《权威词典》
4. She speaks fluent and idiomatic English.
她讲一口流利地道的英语。
来自《权威词典》
5. Long practice enabled that American to speak fluent Chinese.