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。
One day he went down to the manhole again.
一天他又钻进下水道。
Here's the question: Why are manhole covers round?
这是问题：为什么下水道井盖是圆的？
Keep proper length of pipe when put into the manhole .
布放后应保留适当长度于引进端人（手）孔或拉箱内。
Cast iron manhole cover anti impact resistance, easy rupture.
铸铁检查井盖不耐冲击，易破裂。
Manhole, observation hole and measure hole are set on the wall.
炉墙上设有人孔门、观察孔和测量孔。
It's possible that you could inadvertently step into an open manhole.
很可能你不小心就会掉进敞开的下水道口。
Do you think we can get to the subway if we climb through that manhole?
你想我们可以从那个下水道孔直接掉到地铁站里吗？
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。
This driver cannot driver any farther because there is a man in the manhole.
由于（锅炉的）检修孔里有人在，所以那个司机再也无法前进。
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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