进步飞快的英语怎么说

"进步飞快" (jìn bù fēi kuài) 指的是进步很快或进步非常快的状态。这个短语的来源可能是源自汉语中的"飞快" (fēi kuài), 这个词本身就有"快速"的意思。

下面是一些英文例句和它们的中文翻译：

His English skills have improved at a rapid pace. (他的英语水平进步飞快。)
The company's sales have been growing at a breakneck speed. (公司的销售量以飞快的速度增长。)
She's learning to play the piano at an impressive speed. (她学习弹钢琴的速度令人印象深刻。)