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“Wikipedia
…
Guard rail or guardrail, sometimes referred to as guide rail or railing, is a system designed to keep people or vehicles from (in most cases unintentionally) straying into dangerous or off-limits areas. A handrail is less restrictive than a guard rail and provides both support and the protective limitation of a boundary.”
( http://en.wikipedia.org/wiki/Guard_rail )
“Wikipedia
…
Guard rail or guardrail, sometimes referred to as guide rail or railing, is a system designed to keep people or vehicles from (in most cases unintentionally) straying into dangerous or off-limits areas. A handrail is less restrictive than a guard rail and provides both support and the protective limitation of a boundary.”
( http://en.wikipedia.org/wiki/Guard_rail )
The translation workplace 
peer agreement (net): +2
