Why are manhole cover round in shape?

Some characteristic of cast iron manhole cover.

铸铁检查井盖的一些特性.

The people authorized to open manhole covers could easily be trained to do It'safely.

专业人员经过简单的培训就可以做到安全的打开井盖.

" Why are manhole covers round? "

为什么 下水道的井盖是圆的?

Say, Doc, did a guard go by here with a manhole cover tool?

嘿, 博士, 有警卫会带著通道盖子工具经过这边 吗 ?

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

这个问题是: 为什么下水道井盖都是圆的?

Stainless steel bolts and nuts shall be tightened on manhole covers.

人孔盖使用不锈钢螺栓和螺母拧紧.

Take the manhole bag a purse that can hide valuables by unfolding to a sewer cover.

有[人孔盖提袋],摊开来就像下水道人孔盖,可以藏值钱的东西.

This welding backing is specially designed for hand holes and manholes welding.

本衬垫适用于入孔,出孔的焊接使用.

Manholes are equipped with complete parts such as manhole covers , washers, bolts, nuts and lifting rods.

人孔配有人孔盖 、 垫圈 、 螺栓 、 螺母和起吊杆等全套部件.

Air investigations are absolutely necessary before entering any manholes.

空气调查是绝对必要的,方可进入任何沙井.

Interior surfaces of manholes and its covers should level with that of the container.

人孔及人孔盖的内表面与容器的内表面平齐.

America's manhood

美国的男人

You have now entered into manhood.

你现在已成年了.

He passed out of childhood into manhood.

他已从童年进入壮年.

He disappeared into the bush to prove his manhood.

他为了证明他的勇气,消失在灌木丛中.

Her new-found power was a threat to his manhood.

她最近具有的能力对他的男子汉气概是个威胁。

Most sportsmen are at their best during their early manhood.

大多数运动员在刚刚成年的时候进入顶峰时期.

Therefore, they stop by a knife factory, since having a knife represents manhood 2 to the Uygur.

因此他们顺路参访制刀厂, 这是因为刀子对维吾尔族人来说象徵著男子气概.

When a boy reaches manhood, he should behave like a man.

男孩成年后其行为应象个男子汉.

He had much money to play with in his manhood.

他成年时有许多钱供他挥霍.