You can't use the feature to upgrade a standard suite up to the latest versions -- whatever they may be -- and this stipulation makes the system complex to use in a network environment.

不能使用这项功能将标准套件升级到最新的版本，无论这些版本是什么，这一限制使系统在网络环境中的使用变得更复杂。

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When the system crashes regularly or a virus hijacks the network, there's no easy alternative: you need to upgrade the whole system, maybe even rewrite the code from the bottom up.

当系统定期崩溃或是一种病毒劫持了网络，你别无选择：你需要升级整个系统，也许甚至要从下到上重写代码。

youdao

The practical application effect of the comprehensive wiring system is obvious in the upgrade of the meteorological core network of Guangdong Provincial meteorological bureau.

综合布线系统在广东省气象局核心网络升级综合布线实际应用效果明显。

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New hope that two new railway stations will be built in Cambridgeshire follow Network Rail's plans to refurbish and upgrade the system.

BBC: Hopes for new stations but campaign wants faster trains