fluent

She is fluent in three languages: English, Spanish, and French.

她能流利地说三种语言：英语、西班牙语和法语。

用法提示：fluent 作形容词，表示“流利的”，后接 in + 语言，说明在某语言上流利。

It usually takes years of practice to become fluent in a second language.

通常需要多年的练习才能流利地掌握一门第二语言。

用法提示：become fluent 是系表结构，fluent 描述主语的状态，意为“流利的”。

Although he has lived in Rome for only two years, his Italian sounds completely fluent.

虽然他在罗马只住了两年，但他的意大利语听起来已经非常流利了。

用法提示：fluent 作表语修饰 Italian，表示“（语言表达）流利的”。