"从人们开始对地表的特殊岩层进行编目和分类时起，大家就开始期望能够以某种方式利用这些岩层来计算地质年代。
Ever since people had begun to catalog the strata in particular outcrops, there had been the hope that these could somehow be used to calculate geological time.
到20世纪80年代时，计算机行业迅猛发展。
那个年代人们很矮–要么就是那些军装在洗涤时全都缩水了！
People were short in those days – or else those military uniforms all shrank in the wash!
施韦策表示，上世纪90年代初，西尔斯对其汽车维修人员实施销售配额时，情况就是如此。
Such was the case, Schweitzer says, in the early 1990s when Sears imposed a sales quota on its auto repair staff.
上世纪60年代初，让-克洛德·基利进入法国国家滑雪队时，他打算比任何人都更加努力，成为最好的滑雪队队员。
When Jean-Claude Killy made the French national ski team in the early 1960s, he was prepared to work harder than anyone else to be the best.
20世纪80年代初，华莱士夫妇都在他们九十多岁时去世。
The Wallaces both died in their nineties in the early 1980s.
20世纪60年代末期，当斯里兰卡繁荣的椰子果园被潜叶昆虫侵扰时，一种从新加坡引进的寄生幼虫将这种害虫控制住了。
In the late 1960s, when Sri Lanka's flourishing coconut groves were plagued by leaf-mining hispides, a larval parasite imported from Singapore brought the pest under control.
例如，睡眠时间从20世纪50年代的8小时左右下降到近年来的7小时。
For example, sleep duration has declined from some 8 hours in the 1950s to 7 in recent years.
当米兰科维奇在20世纪20年代首次提出这个理论时，他的许多同事都持怀疑态度。
Now, when Milankovitch first proposed this theory in the 1920s, many of his colleagues were skeptical.
但在20世纪80年代，对出生时被分开而成年后重新团聚的同卵双胞胎进行研究时，双胞胎研究出现了令人惊讶的转折。
But twin studies took a surprising twist in the 1980s, with the arrival of studies into identical twins who had been separated at birth and reunited as adults.
在1977年关闭之前，这所学校一直是谋杀悬疑和惊悚片的热门场景，包括19世纪60年代风靡一时的电视节目《复仇者联盟》。
Before it closed in 1977, the school had been a popular setting for murder mysteries and thrillers, including the cult 1960s TV show The Avengers.
20世纪60年代之前，当人们伏案写作时，即使受教育一般的人也追求一种高雅的文风，而从那以后，即使是令人景仰的文章也在追求口语风格。
While even the modestly educated sought an elevated tone when they put pen to paper before the 1960s, even the most well-regarded writing since then has sought to capture spoken English on the page.
20世纪60年代之前，当人们伏案写作时，即使受教育一般的人也追求一种高雅的文风，而从那以后，即使是令人景仰的文章也在追求口语风格。
While even the modestly educated sought an elevated tone when they put pen to paper before the 1960s, even the most well-regarded writing since then has sought to capture spoken English on the page.
即使在19世纪50年代他是全国知名人物时，他也像个三流经纪行的职员，也许还会把一些可能是有标记证明的纸片挂在他的口袋外面或插在他帽子里。
Even when he was nationally famous in the 1850s he resembled a clerk in a third-rate brokerage house, with slips of paper—marked-up proofs perhaps—hanging out of his pockets or stuck in his hat.
在1960年代，当国民储蓄盈余很大时，实际利率往往更高。
During the 1960's real interest rates were often higher when the national savings surplus was large.
然而，这种情况在20世纪70年代中期，美国开始放松对运输业的管制时开始改变。
This started changing, however, in the mid-1970s, when America began to deregulate its transportation industry.
当历史学家对失业问题有所关注时，他们关注的是20世纪30年代的大萧条。
When historians have paid any attention at all to unemployment, they have focused on the Great Depression of the 1930's.
二十世纪60年代，当我还是耶鲁大学心理学系的一名研究生时，我首次开始研究人类动机的基础以及人们在遭遇挫折后如何坚持下去。
I first began to investigate the basis of human motivation—and how people persevere after setbacks—as a psychology graduate student at Yale University in the 1960s.
20世纪60年代时，由于没有很多食物，好多人甚至饿死了。
In the 1960s, because there wasn't much food, many people even died from hunger.
二十世纪60年代，沃特林顿在进行水下录音时，注意到一些奇怪、低沉的声音。
In the 1960s, Watlington was making underwater recordings when he noticed some strange, deep sounds.
牛仔已经在美国西部和西南部生活和工作了三个多世纪，他们是美国著名的象征，所以你看那些五六十年代的好莱坞牛仔电影时，你看到的是一份工作。
Cowboys have lived and worked in the west and southwest of the United States for over three centuries and they are a famous symbol of the US. When you watch those old Hollywood cowboy films from the fifties and sixties, you see a job.
从布什年代里吸取到的教训就是：当巴勒斯坦出现僵局，或大火发生时置之不理，事情也不会保持原样。
But the correct lesson from the Bush years is that when there is stalemate in Palestine, or the fire is left untended, things do not remain the same.
我只能想象他在那个动荡的年代步入椭圆形办公室时的所思所想。
I can only imagine how he must have felt, entering the Oval Office in turbulent times.
地质学家关注沉积物，通过它们地质学家可以揭示过去，特别是在地球从一个地质年代跨越到另一个地质年代时那些巨大的时间跨度。
Geologists care about sediments, hammering away at them to uncover what they have to say about the past-especially the huge spans of time as the Earth passes from one geological period to another.
到了1820年代她只需要花大约一小时了。
在1990年代，商人贿赂法院时，双方尚知道彼此作为是错误的。
In the 1990s, when businessmen bribed the courts, both parties knew they were in the wrong.
当我在90年代买下不能偿还的债时，我知道这个商机不会永远持续下去。
When I was buying defaulted loans in the '90s, I knew the opportunity would not last forever.
当我在90年代买下不能偿还的债时，我知道这个商机不会永远持续下去。
When I was buying defaulted loans in the '90s, I knew the opportunity would not last forever.
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