語言說得順
把「不被卡住的水流」放到一個人使用外語的能力上：話能一路流出來，就叫這個人 fluent。
speaks a language well · adjective · B2
Able to speak a language very well, so that you can keep talking without stopping to look for words, and you understand it easily too.
流利的
核心畫面
One way to picture it: water running along without anything blocking it. Something fluent keeps moving — words, sentences, or movements come one after another with no stops, no going back to fix things.
一條水流一直往前流，中間沒有被石頭卡住。fluent 這個字本來就跟「流」有關（想想 fluid 流體、flow 流…更多收起
一條水流一直往前流，中間沒有被石頭卡住。fluent 這個字本來就跟「流」有關（想想 fluid 流體、flow 流動）：一件事在進行的時候，一段接一段自己順下去，中間不必停下來想、不必倒回去修、不會突然卡住。用在講話上，就是話從嘴裡一路流出來，不用中途停下來找字；用在寫的東西、用在身體的動作上，也都是同一個畫面——沒有斷點，沒有頓挫。Three branches
話語與文字本身流暢
焦點從「人」移到「產出的東西」：不是說某人會不會，而是說這段話、這篇文章讀起來順不順。
smooth speech or writing · adjective · B2
Speech or writing that is fluent is smooth and confident: it moves along easily, with no mistakes and no awkward stops. A fluent speaker or writer is someone whose words come out this way.
流暢的
動作順
把同一個「沒有斷點」的畫面從語言搬到身體上：不是話流出來，是動作流出來。
smooth movement · adjective · B2
Fluent movements are smooth and gentle: each one flows into the next instead of being sudden and sharp.
流暢的（動作）
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
fluentlyadv
- 1
In a fluent manner, as expressing oneself easily, especially in a foreign language.
- He lived in Mexico, so he is able to speak Spanish fluently.
- 2
In a fluent manner, as having graceful movements.
- 3
In a fluent manner, as literally flowing.
- When he had gone half way he turned around and stared at the scene—his wife and Catherine scolding and consoling as they stumbled here and there among the crowded furniture with articles of aid, and the despairing figure on the couch, bleeding fluently, and trying to spread a copy of Town Tattle over the tapestry scenes of Versailles.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。