keep up with基本解释
跟上， 不落人之后；齐肩并进；紧跟

网络释义
1. 追上,赶上
2. 赶上
3. 跟上,不落后
4. 赶得上
5. 看齐

keep up with的用法和例句
I was trying to keep up with traffic .
我只是想跟上大部队。

Even well-established companies can scarcely keep up with demand .
即便是知名企业，也很难跟上此种需求。

It 's impossible to keep up with trends to know what to buy to avoid feeling left behind .
想要紧跟潮流是不可能的，我们得知道我们应该去买些什么才能避免落伍。

As gdp growth in emerging economies soared their consumption could not keep up with rapidly rising income and saving rose .
随着新兴经济中gdp的骤升，他们的消费无法跟上收入上涨的脚步，因此存款大为升高。