大约

Periclean Athens, Confucian China and Achaemenid Iran existed at more-or-less the same time, between 500BC and 450BC.

伯里克利时期的雅典孔子时期的中国和阿契美尼德时期的伊朗大约存在于同一历史时期，公元前500年到公元前450年。

Stems roundly 6-angled; leaf blade oblong or broadly ovate; achene ca.

茎彻底地6棱；叶片长圆形或宽卵形；大约2.8毫米的瘦果 7 P 。

This Acheulean hand axe comes from Olduvai Gorge, Tanzania, and is about 700,000 years old.

这个阿利舍手斧在Olduvai Gorge， Tanzania找到，大约有70万年历史。

"About 700,000 years ago, the first rough hand ax appeared; it was later refined and used with other tools in the Acheulean industry."

"大约700，000年前，第一支粗糙的手斧出现，后来在阿舍尔文化期工艺时期加以改进并与其它工具一起使用。"

Acheulean tools, named for an archaeological site in Saint-Acheul, France, were first developed about 1.5 million years ago.

以一个考古地名法国的圣阿舍利命名的阿舍利时期工具最早在大约150万年前就制造出来。

Earlier work hinted that improvements in tool technology around 1.4 million years ago—namely, the advent of the Acheulean hand ax—allowed hominids to leave Africa.

先前的研究结论给人的印象是，大约140万年前，制作工具的技术改进了，人类因而能够离开非洲。

There are about 20 different amino acids, eight of which must be present in the diet.

大约有20种不同的氨基酸，其中八个必须在场的饮食。

There are about 20 different amino acids commonly found in plant and animal proteins.

大约有20种不同的氨基酸中常见的植物和动物蛋白质。

I'd like to ack for a raise can you give me a ballpark figure ?

我要求加薪，你能告诉我一个大约的数字吗？

But in jury trials, which were introduced in all Russian regions except Chechnya in 2002, the acquittal rate is about 20%.

而在陪审团审理（2002年，俄罗斯除车臣以外的其它地区都引入了这一制度）的案件中，宣判无罪的案件占到大约20%。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。