Feeding the pups is also more difficult.

喂养幼仔也更加困难。

youdao

And, of course, the material is also more difficult.

当然，这些材料，也比上次的难。

youdao

Those sites are also more difficult to set up and maintain, which unfortunately often translates into less stable sites.

这些站点也比较难于设置和维护，遗憾的是，这通常会导致站点不大稳定。

youdao

He also says the economic situation will make it more difficult for some victims to leave abusive relationships.

VOA: special.2009.02.28

Now the intervention studies are stronger methods than the epidemiology studies but they're also more difficult studies to do.

相比传染病学研究,干预性研究更有效,但也更难执行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

just to make it more difficult for them to operate. Shaaf also says that the government has been using whatever laws it can to shut down organizations dedicated to civic activism.

VOA: standard.2009.08.04

They were also more difficult to value since they were not traded on regulated exchanges.

FORBES: Unlisted REITs: What Went Wrong?

But it's also more difficult because I'm trying to write in secret on some level and people know who I am.

WSJ: Dan Brown returns to Europe for 'Inferno'

The task of complying with the tax code is now easier (thanks to computers) but also more difficult, because of the code's seemingly organic annual growth in length and obscurity.

ECONOMIST: The costs of complying with America's tax rules