Please move the manhole cover away.
请将人孔盖移开。
Why are manhole cover round in shape?
点解下水道的盖是圆形的？
If we could get that manhole cover up …
要是我们能把那个下水道入口盖打开…
The manhole cover is too weight to move.
人孔盖太沉移不动。
The manhole cover is too weighty to move.
人孔盖在重移不动。
Cast iron manhole cover anti impact resistance, easy rupture.
铸铁检查井盖不耐冲击，易破裂。
In theory, ductile iron manhole cover when installed, should be a whole.
在理论上说，球墨铸铁井盖在安装的时候，应该是一个整体。
Cast iron manhole cover of good quality is to see its toughness and hardness.
质量好的铸铁井盖是要看其韧度和硬度的。
At the same time, the manhole cover has the characteristics of insulation, noise free.
同时，这种井盖还具有绝缘、无噪声的特点。
At the same time, the manhole cover has the characteristics of insulation, noise free.
同时，这种井盖还具有绝缘、无噪声的特点。
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