I found this young man was blind, so I stood for some time without crossing the street.
我发现这个年轻人是盲人，所以我站了一会儿没有过马路。
The ramming pipe drapery is used for support to construct the crossing structures of underground passage, blind channel and etc.
用夯管帷幕作为支护来建造地下通道、暗渠等穿越构造物，在城市建设中是一项新的施工工艺。
For example, when we see a blind person crossing the road, we should give our hand to him.
例如，当我们看到盲人过马路时，我们应该给予帮助。
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