电风扇应安装防护罩，不要安放在人行通道上。
Electrical fan should be equipped with guards and placed out of the way of people passing by.
为此，祖父必须把很重的大桶推上一个斜坡，推过人行通道。
To do this, he had to push the heavy vats up a ramp and across the walkway.
介绍武汉市常青路地下人行通道超浅埋暗挖施工以及控制地表沉降的技术和方法。
An introduction is given to construction of a super shallow buried subsurface excavated underpass in Wuhan, and the control of ground settlement.
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