以下为句子列表:
英文: While men are carrying out roadwork and there is a danger to employees or restricted traffic flow, watchers must be in attendance and warning signs and danger flags must be displayed.
中文: 在进行道路施工时,在对于雇员存在危险或限制交通的地点,必须有人看守,而且必须设置警示标志和危险旗。
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