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Most noticeably, it's hard to run test programs and the like in the target environment, and if it differs from the host environment, this makes configuration a dodgy experience.

最著名的是难以在目标环境中运行测试程序以及类似程序，而且如果它与主机环境不同，配置起来相当麻烦。

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In Figure 32, where the transforms are sorted by target, it's getting hard to follow the source of the transforms, so Figure 33 shows how the map looks when the transforms are sorted by source.

在图32中，转换是按目标排序的，跟踪转换的源变得非常困难，所以图33显示了在按源对转换排序时的映射情况。

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Malaria is caused by a complex parasite that makes it hard to target with a vaccine.

VOA: standard.2010.01.20

The Department is working hard to achieve its target with the help of all stakeholders in the province.

UNESCO: EDUCATION

But what's interesting campaign managers is that they've been seized with such enthusiasm by increasingly hard-to-target teens and young adults -- even Britain's Prince Harry is rumored to have a Facebook account.

CNN: Will the 2008 USA election be won on Facebook?

For example, adidas needed to address the fact that sales of running shoes in France among its hard-to-reach target demographic of 14-to-19-year-olds were down.

FORBES: Why Brand Experiences Matter