旧石器

ESR dating of tooth enamel is a quantitative method, which can provide absolute calibration age-marks for palaeogeomagnetic time scales of Early Pleistocene palaeoanthropological and palaeolithic sites.

牙珐琅电子自旋共振测年法目前是为我国早期古人类和旧石器遗址年代的古地磁年龄提供标志点的唯一定量方法。

Based on his analysis of the stone tools from late Palaeolithic to early Neolithic period in Lingnan area(to the south of the Wuling Ranges),the author tries to separate acharacteristic stone assemblage and names it as Huangyandong culture.

本文通过对岭南地区从旧石器时代晚期到新石器时代早期一批重要遗址的石器进行文化分类排序的尝试，归纳出一套具有典型特征结构的石制品组合，并将以这套石制品组合为代表的遗存命名为&黄岩洞文化&。

We don't know what our Stone Age ancestors knew about p1ants, but from what we can observe of preindustrial societies that still exist, a detailed learning of plants and their properties must be extremely ancient .

我们不知道旧石器时代的祖先们对植物究竟了解多少，但根据我们对现存的工业社会的研究，可以肯定对植物及其特点的详细了解一定非常久远。

We don't know what our Stone Age ancestors knew about plants,but from what we can observe of preindustrial societies that still exist,a detailed learning of plants and their properties must be extremely ancient.

我们不知道旧石器时代的祖先们对植物究竟了解多少，但根据我们对现存的前工业社会的研究，可以肯定对植物及其特点的详细了解一定非常久远。

Proof of these migrations is the distribution over every continent of the crudely worked, unsharpened flint tools of the earlier Stone Age, known as "palaeoliths," all or most of which date from this period.

石器时代早期的粗制的、未加磨制的石器，即所谓旧石器时代的石器（这些石器完全属于或大部分都属于这一阶段）遍布于各大洲，就是这种移居的证据。

The old requirements were "ability to paint a cel" Now, since they won't leave as soon, we want to hire people with more then rudimentary intelligence (only Cro-Magnon or higher on the evolutionary scale) and who don't try to eat the mice, keyboards and such.

以前要求&能给胶片上色&，现在，因为人跑得不像以前那么快了，我们就希望能雇到些具备比最最基本能力高一点能力的人（从进化史上来看能比旧石器时代人高点的），另外不会把鼠标键盘之类的往嘴里赛的人。

They live in the most barren and desolate desert areas, like the Old Stone Age, hunting and gathering to plant roots, stems and fruits for a living.

他们生活在最贫瘠和荒芜的沙漠地区，像旧石器时代那样，以狩猎和采集植物的根、茎及野果为生。

If my memory serves me, the gate has realigned itself and if it does not receive two stones in the next few moments..

如果我是你的话，就会赶紧带着这个克鲁马努（旧石器时代晚期在欧洲的高加索人种）牛仔离开。

From the existing archaeological discoveries, we can see that in the Paleolithic Age, there have been a tip-shaped stones, stone balls, stone hand axes, bone spears. Until the end of the Neolithic Age, there appeared a large number of stone axes, stone shovels, stone knives and bone harpoons, arrowheads, and even copper tomahawks, copper axes and so on.

从现有的考古发现中我们可以看到，在旧石器时代，已出现了尖状石器、石球、石手斧、骨角加工的矛，而到了新石器时代末期，则出现了大量的石斧、石铲、石刀和骨制的鱼叉、箭镞，甚至还有铜钺、铜斧等。

A store Peking Man site locates the southwest building in Peking City mountain area a store main beam of boat mountain north, ising a material to enrich most in the world, most the human site of the earlier period in system, year in age.1921 In stone in old in and in worthy in most in the to 1927, the archeologist discovers outside" Peking Man" cave site three times successively three human tooths fossil,1929, discovers again Peking Man skull fossil, and artificial creation of tool with use the fire historic relic, the important cist that to become to frighten the world detection.A year a store site still discovers to be apart from to invite now summit of hill hole person's fossil a thousand yearseses ago with culture keepsake.

周口店北京人遗址位于北京市西南房山区周口店镇龙骨山北部，是世界上材料最丰富、最系统、最有价值的旧石器时代早期的人类遗址。1921年至1927年，考古学家先后三次在&北京人&洞穴遗址外发现三枚人类牙齿化石，1929年，又发现了北京人头盖骨化石，以及人工制作的工具和用火遗迹，遂成为震惊世界的重大考古发现。1930年在周口店遗址还发现距今约2万年前的山顶洞人化石和文化遗物。

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。