对于这个职位，精通一门或多门计算机编程语言是必需的。

For this role, ___fluency in one or more computer programming languages is essential.

我计划出国留学以提高我的语言流利度。

I plan to study abroad to improve my ___fluency in the language.

在当今全球化的商业环境中，精通第二语言是一项宝贵的资产。

In today's global business environment, ___fluency in a second language is a valuable asset.