It is difficult to make a comparison with her previous book—they are completely different.

这很难与她以前的书相比—两者是截然不同的。

《牛津词典》

youdao

Now that you have your source code resides in a CVS repository, you can make any and all necessary changes while preserving previous versions for comparison and regression testing.

既然已经将源代码放在CVS存储库中了，就可以进行任何必要的更改，同时保留以前的版本供比较和回归测试。

youdao

How does this recovery truly measure up in comparison with previous recessions in our lifetime?

FORBES: Move up http://i.forbesimg.com t Move down

But comparison with previous periods is difficult because the club's latest accounts cover a 10-month period, rather than the usual 12.

BBC: Liverpool FC confident about finances despite debt rise

In the first quarter, the company expects off-peak seasonality to dampen on-quarter growth, although demand will be up in comparison with the previous year.

ENGADGET: Samsung reports $8.27 billion in profits for Q4 2012 HD