A complicated mix of costs, technology and environmental issues means no one source is best.

一个复杂的混合成本，技术以及环境问题意味着没有一种能源是最好的。

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Issues surrounding the cold chain were another source of problems.

冷链方面的问题属于另外一个问题根源。

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In his interview, Goerzen explains why, in his opinion, this language is worth learning; he provides insights into its specificities and addresses some issues that may be a source of reluctance.

在访谈中，Goerzen解释了他为何认为Haskell是一门值得学习的语言，剖析了Haskell的各种特质，还讨论了一些可能令人对Haskell敬而远之的问题根源。

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These tools must be designed to provide increased visibility to virtual and cloud environment, which will allow IT personnel to more effectively identify the source of issues that arise.

FORBES: Virtualization And The Cloud: The Trouble Is Troubleshooting

In conjunction with the large number of respondents who expressed difficulty in identifying the source of troubleshooting issues, this indicates that the development of monitoring solutions may not be keeping pace with the adoption of the technology.

FORBES: Virtualization And The Cloud: The Trouble Is Troubleshooting

He is an expert source on issues of internet safety and the associated organizational threats of data loss, data theft, security breaches, productivity loss, and human resource liability.

FORBES: Employees Really Do Waste Time at Work, Part II