fluent metal

例句：

1. 1.She spoke English with a fluent accent.
   她英语说得非常流利。
2. 2. The new software is designed to make work more fluent.
   这款新软件旨在使工作更加流畅。
3. 3.His speech was fluent and easy to understand.
   他的演讲流利易懂。