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关注：1
2013-05-23 12:21
求翻译：开挖作业时，应在施工地点设置护栏及警告牌，夜间应设红灯。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
开挖作业时，应在施工地点设置护栏及警告牌，夜间应设红灯。
问题补充： |
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2013-05-23 12:21:38
Excavation process should be set at the construction site fence and warning signs, should be set at night the red light.
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2013-05-23 12:23:18
Digging up when operating in construction sites, should have guard-rails and warning signs should be located at night, red light.
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2013-05-23 12:24:58
When excavates the work, should in the construction place establishment guard rail and the caution board, should suppose the red candle at night.
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2013-05-23 12:26:38
Excavation work, construction site set up barriers and warning signs, and should have a red light at night.
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2013-05-23 12:28:18
We keep the city clean is paramount
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