fluent

She became fluent in Spanish after living abroad. ▶

在国外生活后，她能流利地说西班牙语了。

Fluent speakers may still make grammatical mistakes, so language assessments should consider both communication skills and accuracy.

说话流利的人仍可能犯语法错误，因此语言测评应同时考虑沟通能力和准确性。