在过去几十年中，来源于诸如家庭供暖和烹饪等的室内污染持续存在，尽管在这方面已经有所改进。
Indoor pollution, which includes sources like home heating and cooking, has remained constant over the past several decades despite advances in the area.
尽管许多食品天然富含水杨酸盐，但在过去几十年里，食品加工公司也一直在食品中添加水杨酸盐作为防腐剂。
Although many foods are naturally rich in salicylates, for the past several decades, food-processing companies have also been adding salicylates to foods as preservatives.
我们最初在2016年就有了这种怀疑，让我们感到困惑的事实是，当时国家统计数据显示，卡路里的消耗量在过去几十年里急剧下降。
We originally had this suspicion back in 2016, puzzled by the fact that national statistics showed calorie consumption falling dramatically over past decades.
在过去几十年里，畜牧业变化巨大。
There have been many changes in the livestock industry in the preceding decades.
医疗成本在过去几十年中以惊人的速度增长。
Healthcare costs have been rising at alarming rates for decades.
在过去几十年中，印第安人血统显然颇受青睐。
Over the last few decades, having Native American ancestry has apparently become popular.
在过去几十年，中国发生了翻天覆地的变化。
Over past few decades, China has undergone tremendous changes.
点击这里，在IFA展会回顾在过去几十年。
Click here for a look back at IFA over the past few decades.
它们在过去几十年已经成为我生活中的一部分。
过去四年粮价上涨幅度之大，在过去几十年未曾出现过。
Over the past four years prices have been more volatile than they have been for decades.
然而在过去几十年里，一系列研究质疑了这一个老观点。
Over the past few decades, however, a series of studies has called these stereotypes into question.
在过去几十年里富裕国家的智力水平的提升已经被注意到。
A rise in intelligence over the decades has already been noticed in rich countries.
在过去几十年，简化和捆绑的经济销售模式被颠倒过来。
In the past few decades, though, that long process of simplifying and bundling economic offerings has been reversed.
在过去几十年，雇员与雇主协商雇佣条件时通常都已失去了立场。
In the past few decades, workers have generally lost ground against employers in negotiating terms of employment.
在过去几十年里，农场动物遭受到有史以来人类所给予的最坏待遇。
Farm animals in the last few decades have received the worst treatment ever inflicted by humans.
在过去几十年X 70级管线钢的典型组织一直是铁素体-珠光体。
In the past decades of years the typical structure of pipeline steel X70 was the ferrite-pearlite.
建议的方法还将减少在过去几十年让企业饱受其害的那些“经典”老问题。
The proposed approach will also alleviate the classical legacy issues that have been plaguing enterprises over the past several decades.
在过去几十年，手机已成为公众关注的焦点并向我们提供了极大的便利。
It is universally acknowledged that the mobile phone has become the focus of the public and provided us with great convenience in the past decades.
在过去几十年的几次事件中，只有中国渔民被越南人和菲律宾人的船杀死。
Over the last several decades, only Chinese fishermen were killed in several incidents by both Viet and Filipinos.
Robinson：我们在过去几十年的经验是，这并不是西方世界所独有。
Robinson: And what we have learned in the past few decades is that it is not distinctive to the Western world.
新飞机的介绍使解释者想到——为什么在过去几十年航空旅行一点也没便快纳？
The introduction of the new planes got the Explainer thinking—why hasn't commercial air travel gotten any faster over the last few decades?
在过去几十年里，这种蚂蚁已经大规模地进化了，在现代城市里生活的如鱼得水。
Over the past few decades, this ant has adapted to city life - in a major way.
在过去几十年，教育、住房、医疗保健和汽油的价格显著提高，薪水却降低了。
Over the past few decades, while the prices of education, housing, healthcare, and gas have risen significantly, salaries have gone down.
事实上，近三年经济扩张了近10年，但在过去几十年，他们的平均四，五年。
Indeed, the last three economic expansions were almost 10 years, but in previous decades, they averaged four or five years.
然而，在过去几十年，美国却在伊拉克和阿富汗做着同样的事情：代价惨痛，收效却甚微。
Yet the United States has spent much of the past decade trying to do precisely that in Iraq and Afghanistan, at great cost and with scant success.
但是，在过去几十年，医学上意识到实际上大多数普遍存在的感冒病毒对我们的细胞几乎没有什么危害。
But, as medical science has realized over the past few decades, the most prevalent cold viruses in fact do little direct harm to our cells.
但是，在过去几十年，医学上意识到实际上大多数普遍存在的感冒病毒对我们的细胞几乎没有什么危害。
But, as medical science has realized over the past few decades, the most prevalent cold viruses in fact do little direct harm to our cells.
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