They have been helping people do daily work for thousands of years.
几千年来，它们一直在帮助人们做日常工作。
For thousands of years, "homeland" has had a soft point in minds of Chinese people.
几千年来，“祖国”这个词在中国人心中一直是柔软的。
For thousands of years, people have used the wind to sail boats and move water.
几千年来，人们利用风来驾驶船只和移动水。
The dove has been a symbol of peace and innocence for thousands of years in many different cultures.
在许多不同的文化中，鸽子几千年来一直是和平和纯真的象征。
Burning the forest just once can leave behind enough black carbon to keep the soil fertile for thousands of years.
森林仅仅燃烧一次就能留下足够的黑碳，来保持数千年土壤肥沃。
For thousands of years, people have known that the best way to understand a concept is to explain it to someone else.
几千年来，人们都知道，理解一个概念的最好方法就是向别人解释它。
This is a very sensible way for an animal to make decisions in the wild and would have been very helpful for humans for thousands of years.
这是动物在野外做决定的一种非常明智的方式，且几千年来，本可以对人类有帮助。
Because dogs have accompanied humans around the world for thousands of years, their current distribution may tell us very little of their origins.
因为狗陪伴人类在世界各地已经有几千年的历史了，它们目前的分布情况可能无法告诉它们的起源。
It can be washed out when it rains or it can be released to the atmosphere, whereas phosphorus combines with calcium and iron, and can be preserved in the soil for thousands of years.
它可以在下雨时被冲刷掉，也可以释放到大气中，而磷与钙和铁结合，可以在土壤中保存数千年。
Racism is a deeply rooted prejudice which has existed for thousands of years.
种族主义是一种已存在了数千年的根深蒂固的偏见。
Shu embroidery stands for thousands of years of Sichuan culture.
蜀绣代表了几千年的四川文化。
Chinese culture has influenced the world for thousands of years.
中华文化影响了世界数千年。
Camels have carried people and things for thousands of years.
骆驼驮人和物已有几千年的历史。
Many of the treatments used in TCM have helped people for thousands of years.
中医所使用的许多治疗方法，在数千年来守护着人们的健康。
Elephants are still in danger of disappearing completely from many countries where they have lived peacefully for thousands of years.
在许多国家，大象已经和平地生活了数千年，但它们仍然面临着彻底灭绝的危险。
Chinese paper-cuts have been a traditional form of decoration (装饰) at the Chinese New Year for thousands of years.
数千年来，中国剪纸一直是新年期间的传统装饰。
She said, "Although the work is hard, Shu embroidery stands for thousands of years of Sichuan culture. It is a symbol of Chinese culture as well."
她说：“虽然工作很辛苦，但蜀绣代表着几千年的四川文化，也是中国文化的象征。”
The seeds can live here for thousands of years because of the cold temperature of -18℃. So, in the future, humans can grow any seed they want.
这些种子可以在这里存活数千年，因为这里的温度是零下18度。所以，在未来，人类可以种植任何想要的种子。
They were used in religious rituals for thousands of years.
它们在宗教仪式中使用了数千年。
Languages have been coming and going for thousands of years.
各种语言的出现和消失已经持续好几千年了
All European forests are artificial, having been adapted and exploited by man for thousands of years.
经过人类几千年的活动与开采利用后，欧洲所有的森林都是人造的。
For thousands of years they have had to rely on catching sea mammals and fish as a means of sustenance.
数千年来，它们不得不依靠捕食海中的哺乳动物和鱼类为生。
He said that we would never leave this terrible crowded place, but would have to stay here for thousands of years.
他说，我们永远不会离开这个可怕的拥挤的地方，而是必须在这里呆上几千年。
Such ice cores trap gases, bits of dust, and other chemicals that were present in the snow that fell over Greenland for thousands of years and then became compressed into ice.
这些冰芯将气体、尘埃和其他化学物质封存在格陵兰岛数千年来的积雪中，然后被压缩成冰。
Some live for thousands of years.
有的已经活了上千年了！
They'd be busy for thousands of years.
因为这需要它们数以千年的工作量。
They've been doing it for thousands of years.
他们干这事已经几千年了。
The earth has been warming for thousands of years.
几千年来地球都在不断增温。
Petroleum has been used for thousands of years.
石油已使用了几千年。
Petroleum has been used for thousands of years.
石油已使用了几千年。
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