Properly designed landscape irrigation systems use isolation valves to protect the rest of your irrigation system if a single component or sprinkler fails.

设计适当的景观灌溉系统使用的隔离阀，以保护您的灌溉系统的其余部分，如果一个组件或喷洒失败。

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In order to install landscape irrigation that works, you will need a landscape expert who understands terms like coverage, line pressure, backflow prevention, and isolation.

为了安装景观灌溉的作品，你需要一个景观专家，谁知道像覆盖面，线的压力，回流预防和隔离。

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Ferguson has seen a massive change in the South African sporting landscape in the past few years as the country continues to bounce back from years of apartheid and subsequent isolation from the outside world.

BBC: United boss praises South Africa