名词
中文翻译：护栏
同义词：
['railing', 'barrier', 'guard', 'rail', 'fence']
例句：
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1.The guardrails are designed to prevent people from falling off the edge of the bridge.
护栏的设计是为了防止人们从桥边掉落。
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2.The guardrail is made of steel and is reinforced with concrete.
护栏由钢制成，并用混凝土加固。
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3.The guardrail was installed at the entrance to the park to prevent children from running into the street.
在公园入口处安装了护栏，以防止儿童跑进街道。