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The Iron Bridge, spanning the Severn river in Shropshire, England, isn't a particularly large or ornate bridge, but it does have something that made it unique: it's the first bridge made completely out of cast iron.

座位在英格兰Shropshire郡severn河之上的铁桥，并不是一座大型或者装饰华丽的桥梁，但它确实很独特：它是世界上第一座完全用生铁制造的桥梁。

It's a good place for sightseeing and shopping , isn't it ?

那是一个观光和购物的好地方，对吗？

However, the game's weighty visual impact isn't solely reliant on a simple polygon count.

m： 游戏画面在游戏机的表现确实不错，足够的多边形让环境栩栩如生。

He's increasingly mixing in pitches and isn't just relying on his sinker.

他增加了变换的球种而不再只依赖他的伸卡球。

This is the second time this week he's had to sit up, isn't it?

这是他这个星期第二次熬夜了，对吧？

My approach is to skim the book first to see what's important and what isn't.

我的方法是先跳读，看看什么是重点，什么不是？

Our team leader isn't a petty skinflint, he's a communist

咱组长不是小气鬼，人家是共产党员。

It isn't my skirt. It's your skirt.

不，这不是我的裙子，这是你的裙子。

He's in the Slug Club,isn't he?

他不是在鼻涕虫俱乐部吗？

It's a small world ,isn't it ?

这个世界很小，不是吗？

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。