fluency
n. （说话）流利；（做事）流畅，娴熟
例句
The team lacked fluency during the first half.
该队在上半场打得不够流畅。
《牛津词典》
His son was praised for speeches of remarkable fluency.
他的儿子非常流利的发言受到了表扬。
《柯林斯英汉双解大词典》
The research investigates how foreign speakers gain fluency.
这项研究旨在调查讲外语的人如何增加流利程度。
