八千万年前，地球是恐龙的天下。
与40年前相比，卫生保健的水平得到了极大提高。
Standards in health care have improved enormously compared to 40 years ago.
2000万年前，爱达荷州不像现在这样干旱。确切地说，它那时温暖潮湿，生长着茂密的原始森林。
Twenty million years ago, Idaho was not the arid place it is now. Rather, it was warm and damp, populated by dense primordial forest.
我的祖父母六年前搬到了乡下。
许多年前，有一位名叫迈达斯的希腊国王。
2200多年前，屈原出生于湖北省秭归县。
Qu Yuan was born in Zigui of Hubei Province over 2,200 years ago.
我父亲多年前给我买的英汉词典仍然很有用。
The English-Chinese dictionary my father bought for me many years ago is still of great help.
五十多年前，联合国宣布识字是一项基本人权。
More than fifty years ago, the United Nations declared that literacy is a basic human right.
六年前我们全家搬到美国时，我们谁也不会说英语。
When our family moved to the United States six years ago, none of us spoke any English.
人们已经在1500多年前的墓穴中发现了动物剪纸。
Paper-cuts of animals have been found in tombs which date back over 1,500 years.
大约100年前，给孩子们零花钱的做法在美国开始流行。
The practice of paying children an allowance became popular in America about 100 years ago.
在中国，使用筷子的历史可以追溯到3000多年前的商朝。
The history of using chopsticks in China dates back to the Shang Dynasty, more than 3,000 years ago.
在克里斯托弗·哥伦布横渡大西洋的八十年前，郑和已经航行到了东非。
It was 80 years before Christopher Columbus crossed the Atlantic that Zheng He had sailed to East Africa.
大约5000年前，埃及人和其他近东地区的人开始将图画作为一种书写方式。
About 5,000 years ago the Egyptians and other people in the Near East began to use pictures as a kind of writing.
虽然屈原在几千年前就去世了，但人们每年都纪念他，因为他忠于国家，忠于人民。
Though Qu Yuan died thousands of years ago, he is remembered every year for his loyalty to his country and his people.
创客运动正在重新发掘“从做中学”的意义，这一概念最早由杜威在100年前提出。
The Maker Movement is rediscovering learning by doing, which is Dewey's phrase from 100 years ago.
我们把法国南部和其他地方的洞穴壁画赞誉为杰作，它们的历史可以追溯到大概2万年前。
We hail as masterpieces the cave paintings in southern France and elsewhere, dating back some 20,000 years.
几年前，在百慕大的一次浮潜旅行中，我们遇到了一只名叫莱西的小猎犬，它喜欢捡石头。
On a snorkeling trip in Bermuda a few years ago, we met a terrier named Lexi, who liked to fetch rocks.
1773年，在《独立宣言》签署的三年前，她关于宗教和道德等各种主题的诗歌在波士顿出版。
Her poems on various subjects, religious and moral, were printed in Boston in 1773, three years before the signing of the Declaration of Independence.
几年前，我在阅读查尔斯·奥曼爵士的恢弘巨著《半岛战争史》时，第一次发现了拿破仑时期的密码战。
I first discovered the Napoleonic cryptographic battle a few years ago when I was reading Sir Charles Oman's epic History of the Peninsular War.
150多年前，查尔斯·达尔文设想了另一个世界，比我们所能看到和听到的世界更忙碌、更嘈杂、也更亲密。
Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate than the world we can see and hear.
在爱荷华州，黛安·奥特·惠利希望保护具有历史意义的植物品种，比如她的曾祖父100多年前从德国带到美国的种子。
In the state of Iowa, Diane Ott Whealy wanted to protect historic plant varieties, like the seeds her great-grandfather brought to the U.S. from Germany more than a hundred years ago.
几年前，本·卡斯诺查曾向我提到一个让我一直无法忘怀的观点：最有可能改变我们想法的人是那些我们在98%的话题上能达成一致的人。
Years ago, Ben Casnocha mentioned an idea to me that I haven't been able to shake: The people who are most likely to change our minds are the ones we agree with on 98 percent of topics.
1989年1月，欧洲铁路共同体提出了一项建议，即在2020年前建成一个从瑞典延伸到西西里岛、从葡萄牙延伸到波兰的泛欧高速铁路网。
In January 1989, the Community of European Railways presented their proposal for a high speed pan-European train network extending from Sweden to Sicily, and from Portugal to Poland by the year 2020.
它是两千多年前由墨子发明的。
许多年前，这里还是一个小村庄。
你还记得几年前我参演的那出戏吗？
新年前，我帮妈妈打扫房间、洗被子。
Before the new year, I helped my mother clean the rooms and wash our quilts.
2000年前，中国人发明了造纸术。
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