noun 下载 🔗分享 护栏，防护栏。 A rail set alongside a dangerous place in order to improve safety. Examples : "The construction workers installed a guardrail along the edge of the building site to prevent anyone from falling. " 建筑工人在建筑工地边缘安装了护栏，以防止有人掉下去。 building traffic 与AI对话词汇游戏阅读练习
