此类有追溯效力的立法还鲜有先例。
There are few precedents for this sort of retrospective legislation.
他的家族可追溯到斯图亚特王朝。
这一习俗可以追溯到几百年前。
这项非常彻底的调查可追溯到1784年。
点燃奥运圣火的风俗可追溯到几个世纪前。
The custom of lighting the Olympic flame goes back centuries.
这些可以追溯到1855年的石阶开始出现磨损。
The stone steps, dating back to 1855, are beginning to wear.
这个展览会追溯了从19世纪到现在美国平面设计的历史。
The exhibition traces the history of graphic design in America from the 19th century to the present.
洛夫洛克自成一套的非主流表现可以追溯到他的童年时期。
Lovelock's principled nonconformity can be traced to his childhood.
涂鸦、足球流氓和街头闹事都可追溯到几十年前。
Graffiti, soccer hooliganism, and street brawling all date back decades.
有些年轮可以追溯到近一万年前的冰河时代末期。
Some of the rings go back almost ten thousand years to the end of the Ice Age.
这个国家的饮食问题可以追溯到第二次世界大战。
The problems with the nation's cuisine can be traced back to the Second World War.
作为一个学习胜地，牛津的起源可以追溯到中世纪。
As a place of learning, Oxford's beginnings go back to the Middle Ages.
埃特纳火山喷发的历史可以追溯到公元前1500年。
苏丹埃博拉病毒最早可以追溯到苏丹小镇的一个人身上。
The origins, though not the cause of Ebola-Sudan, can be traced back to a single individual in a Sudanese town.
然而，科学也有文化历史，其根源可以追溯到文明的黎明。
Yet science has a cultural history, too, with roots going back to the dawn of civilization.
对于不宽容的态度有很多解释，有些可以追溯到童年时代。
There are many explanations for intolerant attitudes, some dating back to childhood.
追溯欧洲语言的早期版本，关于数字的词汇和表达非常贫乏。
European languages, when traced back to their earlier version, are very poor in number words and expressions.
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.
我们睡眠不足危机的起源可以追溯到一个世纪前灯泡的发明。
The beginning of our sleep-deficit crisis can be traced to the invention of the light bulb a century ago.
维基词典指出，“无附加条件”这一说法的起源可以追溯到古代。
Wiktionary tells us that the origin of the expression "no strings attached" may date back to ancient times.
昨天，追溯到320万年前的原始人骨架重建“露西”首次亮相。
The early human skeleton reconstruction "Lucy" dating back 3.2 million years debuted yesterday.
这种夜间的“交易”也许可以一直追溯到所有哺乳动物的祖先身上。
It is probable that the nocturnal trades a way back in the ancestry of all mammals.
其中一些可以追溯到200年前，反映了我们地区过去两个世纪的历史。
Some of them date back 200 years, which reflect the history of our area over the last two centuries.
解释的内容和形式可以追溯到博物馆是科学研究人员的专属领域那个时代。
The content and format of explanations dated back to a time when the museum was the exclusive domain of the scientific researcher.
我们还在这些遗址中发现了马骨，这些马骨可以追溯到博泰人定居的时期。
We also found horse bones at these sites and these can be traced back to the time of the Botai settlements.
就像你可以追溯祖先的家谱一样，它只是在显示与遗传相关的语言，而不是人类。
Like a family tree that you might use to trace back through generations of ancestors, only it's showing a family of genetically related languages instead of people.
偶尔，人们可以确定石器是用在右手还是左手上，甚至可以评估这种特征可以追溯到多远以前。
Occasionally one can determine whether stone tools were used in the right hand or the left, and it is even possible to assess how far back this feature can be traced.
这一裁决应该具有追溯效力。
这一裁决应该具有追溯效力。
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