写字

We can read of things that happened 5,000 years ago in the Near East,where people first learned to write.

我们可以从书籍中读到5000年前近东发生的事情，那里的人最早学会了写字。

We can read of things that happened 5,000 years ago in the Near East, where peoplefirst learned to write.

年前近东发生的事情，那里的人最早学会了写字。

We can read of things that happened 5000 years ago in the Near East ,wherepeople first learned to write.

我们现在能读到5000年前近东地区发生的事情，那里的人类最先学会写字。

We can read of things that happened 5 000 years ago in the Near East, where people first learned to write.

我们可以读到五千年前在近东发生的事情，那里的人最先学会写字。

We can read of things that happened 5,000 years ago in the Near East, where people first learned to write.

我们可以读到近东5000年前发生的事情，那里的人们首先学会了写字。

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。