提高：boost,improve,enhance,increase,raise
但是一般我们还是用improve来表达在某一领域和学业上的水平的提高.
所以可以这样翻译：
We improved our English by a short time.
It was faster than our expect to improve English.
或者更简单的：
We improved our English fast.
提高：boost,improve,enhance,increase,raise
但是一般我们还是用improve来表达在某一领域和学业上的水平的提高.
所以可以这样翻译：
We improved our English by a short time.
It was faster than our expect to improve English.
或者更简单的：
We improved our English fast.