fluency in English

基本解释

Visitors were amazed at the students' conversational fluency in English.
访问者对学生们流利的英语感到惊讶。
《新英汉大辞典》
The rest were deficient in the required technical skills, fluency in English or ability to work in a team or deliver basic oral presentations.
其它人在所需的技术技能、英语流利程度、团队合作能力或基本的口头陈述能力上存在不足。
bbs.translators.com.cn
WALTER OLSON, writing at Cato @ Liberty, is indignant that the state of Arizona has, following civil-rights complaints, stopped investigating teachers for fluency in English
沃尔特•奥尔森在Cato @ Liberty网站发表博客说，亚利桑那州在收到民权投诉后终止了对教师英语的流利情况的调查，他对此表示愤怒。

Fluency in English and internationally recognised qualifications are keenly sought as China opens up to the world.
ECONOMIST: Old schools are finding new markets abroad
Language requirements: Fluency in English while Italian is an essential requirement.
UNESCO: OFFICE IN VENICE
Why such concern for a customer who lacks fluency or competency in English?
FORBES: Se Habla Espanol and No Finding of Misconduct in Chase / LPL Arbitration