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.
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.
在过去几十年里中国已大量提高了其输出的煤和石油的量。
China has done a great deal in the past few decades to raise its output of coal and petroleum.
在过去几十年里，人们对其在外语教学领域的认识几经反复。
Within the last few decades, its importance in foreign language learning has been reassessed several times.
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.
在过去几十年里，他们已经证明自己是文明和善良的，在这个角色。
In the last decades, they have proved themselves to be civilized and good-natured in this role.
经年乘坐飞机旅行的人都会切身感受到喷气发动机在过去几十年里的变化。
THAT jet engines have evolved over the past few decades will be apparent to any seasoned air traveller.
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.
人脸识别在过去几十年里得到了很大的方展，国内外很多学者对其进行了研究。
Face recognition has made a great development in the past several decades. There are many scholars at domestic and abroad studied on face recognition.
电致变色材料被认为是最有应用前景的智能材料之一，在过去几十年里被广泛研究。
As one of the intelligent materials with huge potential applications, electrochromic materials were widely studied during the past several decades.
在过去几十年里，HIC、M CM、SOC等技术在微电子领域内起到了重要作用。
In the past few decades, HIC, MCM, SOC and other technologies play an important roles in the fields of microelectronics.
在过去几十年里，仅在中国就新增了数百个人口超过百万的城市，还会有更多的城市加入。
China alone has added hundreds of cities with millions of people in the last few decades-and wants to add yet more.
在过去几十年里，这些雪阻止了表层的水温升高得更多，增加了冰原的容积，并反射了太阳光。
And for the last few decades, that snow kept surface waters from warming even more, added bulk to sea ice, and reflected sunlight.
虽然法律语言模糊性的研究相对较晚，但在过去几十年里，这一领域的研究已取得很大成就。
Though the research on vagueness in legal language is relatively a new one, there have been a lot of achievements in the study of legal language in the past decades.
强可制强- - -就像美国和苏联在过去几十年里一样- - -但是，要知道，弱也能制强。
The strong have been able to deter the strong — the United States and Soviet Union did so for decades — but, alas, the weak can also deter the strong.
根据来自顾问的轶事报道，在过去几十年里，越来越多的年轻人倾向于用刮胡刀片和打火机来自残。
Over the last couple decades, more young people appear to be pulling out razor blades and lighters in order to injure themselves, according to anecdotal reports from counselors.
在过去几十年里，尽管立陶宛还在前苏联统治之下，但是立陶宛被流放的外交家们签发的护照仍然有效。
For decades, Lithuania's exiled diplomats issued usable passports even though their country was under Soviet rule.
但现在我们依然可以采取一些措施让人民重返工作岗位，重建美国中产阶级在过去几十年里已经失去的安全感。
But there are steps we can take right now to put people back to work and restore some of the security that middle-class Americans have lost over the last few decades.
尽管在过去几十年里中国和西方之间有了广泛的接触，然而，中国人的知识和思想浩瀚如海，西方人却无缘享用。
China has had extensive contact with the West in the last few decades, but there is still a vast sea of knowledge and ideas that is not Shared by both cultures.
虽然在过去几十年里美国青少年怀孕率在稳步下降，但在发达国家中，美国仍然是青少年怀孕和分娩比率最高的国家。
Although the pregnancy rate among American teens has dropped steadily in the past few decades, among developed countries the U.S. still has the highest rates of teen pregnancy and childbirth.
它曾经是世界最大的湖泊之一，在过去几十年里，它已经由一万六千平方英里缩小至不到一千平方英里，最终可能完全消失。
Once one of the world’s largestlakes, it has shrunk in the last few decades from about 16, 000 squaremiles to less than 1, 000, and may ultimately disappear entirely.
由肠出血性(引起肠出血)大肠杆菌，例如O157型大肠杆菌，以及利斯特菌病造成的感染是在过去几十年里出现的重要食源性疾病。
Infections due to enterohaemorrhagic (causing intestinal bleeding) e. coli, e.g. E.coli O157, and listeriosis are important foodborne diseases which have emerged over the last decades.
由肠出血性(引起肠出血)大肠杆菌，例如O157型大肠杆菌，以及利斯特菌病造成的感染是在过去几十年里出现的重要食源性疾病。
Infections due to enterohaemorrhagic (causing intestinal bleeding) e. coli, e.g. E.coli O157, and listeriosis are important foodborne diseases which have emerged over the last decades.
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