Civilization,then,is fine — people banging away on their smartphones are fluently using a code separate from the one they use in actual writing, and there is no evidence that texting is ruining composition skills.
出自-2014年6月阅读原文
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
流利的;流畅的
Someone who is fluentin a particular language can speak the language easily and correctly. You can also say that someone speaks fluent French, Chinese, or some other language.