The first use of urban tunnel with upper vents is HongXing road tunnel in ChengDu.
成都市红星路下穿市政隧道首次采用了顶部开孔的自然通风方式。
It will cause terrible disaster if a fire road tunnel catches is incorrectly treated.
隧道一旦发生火灾，如果处理不当，将造成严重后果。
Now that there is a new tunnel, the road is less dangerous.
既然有了一个的新的隧道，这条路就比较不危险了。
Now that there is a new tunnel, the road is less dangerous.
既然有了一个新的隧道，这条路就比较不危险了。
The road round the lake go through six tunnel.
环湖公路穿越六个隧道。
The road round the lake go through six tunnel.
环湖公路穿越六个隧道。
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