prehistoric times

Mammoths became extinct in prehistoric times .

猛犸在史前时期就已绝迹。

Since prehistoric times , the sketch has served as one of man 's most effective communication techniques .

自从史前时期以来，草图一直被人类用来作为一种十分有效的沟通理解的手段。

These myths have come down to us from prehistoric times .

这些神话从史前一直流传到现在。

Please , tell me more about carbon dioxide in prehistoric times .

请告诉我更多关于史前二氧化碳的信息。

Primitive religion is a religious system created by the human in prehistoric times .

原始宗教是生活于史前时代的人类所创造的一种宗教体系。

There has been human habitation here since prehistoric times .

在远古时代，就有人类在这里繁衍生息。

During prehistoric times , an era of fire was followed by an era of water .

在地质学的纪元中，火的时期之后为水的时期。

It played an important role for the spread and exchange of ancient human civilizations in prehistoric times .

远在史前时期，庙岛群岛已为人类古文明的传播与交流发挥了不可忽视的作用。

Culture Exchanges Reflected from Historical Materials of Prehistoric Times and Pre-Qing Dynasty of Guangdong

从广东史前和先秦时期文物资料看文化交流现象

Painting originated in prehistoric times with murals drawn on cave walls .

绘画始于史前时期洞穴墙壁上的蹙画。

It falls entirely within prehistoric times .

它是完全属于史前时代的事。

Even in prehistoric times population growth often must have threatened or exceeded man 's ability to produce enough food .

甚至在史前时期人口的增长也一定常常威胁或者超过了人类粮食生产的能力。

In prehistoric times , people used flint to flay the animals they killed .

在史前时期，人们常常用燧石将他们打死的动物剥皮。

In prehistoric times , Shen Nong found its good effects after tasting many kinds of herbs .

史前的神农氏时代，神农就遍尝百草而发现茶叶有提神、清心、明目、祛毒的功效。

Even in prehistoric times there were some people who were predisposed to be obese .

即使在古代，也是有人更易于肥胖的。

This tradition is thought to date back to prehistoric times , when early humans worshipped the sun .

这一传统被认为可以追溯到史前时代，早期人类崇拜太阳时。

We could be on the verge of the first-ever big cat extinction since prehistoric times .

人类将看到史前时代以来的首次大型猫科动物濒临灭绝。

People in prehistoric times created paints by grinding materials such as plants and clay into powder and then adding water .

人类在史前时期就创造了涂料，把原料磨碎，如用力把植物和粘土同时加水到里面磨碎。

A major food since prehistoric times , bread has been made worldwide in various forms using a variety of ingredients and methods .

史前即为主要食品，在世界各地以各种不同的材料、方法制成面包。

Differing roles in prehistoric times have evolved into differing shopping styles , the researchers believe .

相关研究专家坚信，由于男女在史前时代的分工不同，导致了他们不同的购物方式。

The use of skates as a means of transportation in cold northern regions of the world began in prehistoric times .

从史前时代起，冰鞋在寒冷的北国就被当作一种交通工具使用。

Perhaps originally a sanctuary , it became a necropolis in prehistoric times .

这座地下宫殿可能曾是避难所，但从史前时期起成为了大墓地。

Horsetail rushes in prehistoric times grew to immense size .

史前的木贼灯芯草长得很大。

Thus researchers have tried using variations in the genes of living individuals to trace their ancestries back to prehistoric times .

这样，研究人员尝试利用活人基因的变异情况追溯到史前的年代，以探索其祖先的来源。

I first came to North American in prehistoric times when I crossed the Bering Strait land bridge from Eurasia .

在史前时期，我从欧亚大陆穿越白令海峡、走过陆地、桥第一次来到了北美。

The Nature article authors explain in their paper that , even in prehistoric times , rock art was already in an advanced state of deterioration .

作者在《自然》杂志的文章中解释到，即使在史前时代，岩石艺术品已经遭受较严重的风化。

It appears to be a throwback to prehistoric times that it has somehow managed to survive .

不知什么原因它竟然能够存活下来，这看来是对史前时期的一种返祖现象。

Archeologists have found it was practiced even in Prehistoric Times ( 1.7 million years to the 21st century B.C. ) .

考古学家们发现甚至在史前时期（公元前1700000年到公元前21世纪）祭祖就在被实行。

Some form of Shooting has been around since prehistoric times , when men hunted prey to secure food or protect themselves from enemies .

射击运动可能在史前时代原始人捕食或者保护自己的时候就出现了。

Culture ： The tradition of ancestral worship has a long history in China . Archeologists have found it was practiced even in Prehistoric Times .

文化：祭天祀祖在中国有着悠久的历史，在史前时期的考古中曾一再发现这类遗存。