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1·Please move the manhole cover away.

请将人孔盖移开。

2·Why are manhole cover round in shape?

点解下水道的盖是圆形的？

3·The manhole cover is too weight to move.

人孔盖太沉移不动。

4·The manhole cover is too weighty to move.

人孔盖在重移不动。

5·One day he went down to the manhole again.

一天他又钻进下水道。

6·Other areas shall use B type manhole covers.

其余的人孔盖为B型人孔盖。

7·Here's the question: Why are manhole covers round?

这是问题：为什么下水道井盖是圆的？

8·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。

9·Nozzle and manhole size shall not be changed by Vendor.

卖方不能改变设备口及人孔的尺寸。

10·Cast iron manhole cover anti impact resistance, easy rupture.

铸铁检查井盖不耐冲击，易破裂。

(1)manhole cover[口]井盖；升降口盖；圆盘状平的东西