只有在20世纪时，随着儿科学和心理学的发展，这些研究才能在一个更客观的基础上进行，即使这一基础仍然不一定很科学。
It was only with the growth of paediatrics and psychology in the twentieth century that studies could be carried out on a more objective, if still not always very scientific, basis.
二十世纪的艺术不是已经表明，自然主义不一定遵循某种既定顺序的抽象了吗？
Has not twentieth-century art shown that naturalism does not necessarily follow abstraction in some kind of predetermined sequence?
Robinson指出，和原有普遍观念不同的是，“尽管上世纪公众的“新闻菜单”发生了一定变化，但目前还没有足够证据证明公众的口味已经倾向于阅读轻松的软性新闻。
But contrary to popular belief, “there is scant evidence that during the last century - despite major changes in the news ‘menu’ - the American audience has moved toward a diet of softer news.
如果你不知道这里提到的“扁平的”是什么意思，那你一定没有读过Friedman的书，TheWorldisFlat：aBriefHistoryOf The 21st Century(《扁平的世界：二十一世纪简史》)。
If you don't know what "flat" refers to here, then you haven't read Tom Friedman's book, the World is flat: a Brief History Of the 21st Century.
然而，虽然自由派为这个结果欢呼并以此作为社会进步的标志，但是它不一定预示萨巴赫家族18世纪以来对科威特统治就这么简单。
Yet while liberals have cheered the result as a mark of social progress, it does not necessarily augur plain sailing for the al-Sabah family that has ruled Kuwait since the 18th century.
有批评人士指出，在20世纪，全球地表温度的记录在一定程度上可能被城镇带来的热量以及其他因素侵蚀过。
Some critics argue that the global record of land surface temperature over the 20th century could be to some extent corrupted by heat from towns and other factors.
19世纪的推荐引擎从不会说，如果您喜欢莫内（法国印象派画家），您一定也会爱上梵高！
A 19th century recommendation engine would never have said, If you liked Monet, you'll love Van Gogh!
挺过21世纪中对世界未来的乐观表述，表示相信中英关系的未来一定更加美好，世界的未来一定更加和谐。
Surviving the 21st Century to point out the optimistic prospect for the future world and said that he believed there would be better China-UK relations and a more harmonious world in the future.
早在上世纪70年代，他们就对外国人名下的银行账户收取一定费用，实际上是实行负利率。
Back in the 1970s they charged foreigners a fee for having a bank account, in effect imposing a negative interest rate.
它是以19世纪拉定美洲的渔民耶苏小男孩命名的，他是最初注意到这种天气反常情况的人。
It was named after the Christ child by Latin American anchovy fishermen in the 19th century who first took note of the weather anomaly.
研究人员说尽管从20世纪到21世纪初已经有一定的增长，现在好像已经到了一个平稳期。
And some researchers say that while there might have been an increase in the 1990s to early 2000s, it has likely hit a plateau by now.
20世纪70年的通货膨胀源自60年代，当时的经济学家认为，一定的通货膨胀可以降低持续的低就业率。
The inflation of the 1970s had its origins in the 1960s, with economists who believed that a bit more inflation could buy lasting lower unemployment.
从20世纪90年代末起(那时Web的繁荣正达到某个饱和点)，一些用户开始编辑他们最喜欢的网站清单，这些网站符合一定的兴趣或主题。
Since the late 1990s, when Web proliferation reached a certain saturation point, some users began compiling lists of their favorite Web sites that conformed to a certain interest or topic.
一旦食可果腹，居有定所，人们就想要更高层次的东西。这就是19世纪五六十年代在该报工作的经济学家Fred Hirsch所谓的“地位商品”。
Once they have filled their bellies and put a roof over their heads, people want more of what Fred Hirsch, an economist who worked on this newspaper in the 1950s and 1960s, called “positional goods”.
Feld不一定只指开垦为农耕用途的土地，而是指任何空旷的地方（五世纪的英国，森林几乎覆盖了所有地方）。
A feld was not necessarily ground broken for arable, but any open country in the almost all-covering fifth-century forest.
当被我们任何一个人告知我们了解的是如此的少，前方的道路显得如此陌生，18世纪那些最顶尖的人一定感到震惊。
It would have amazed the brightest minds of the 18th century to be told by any of us how little we know and how strange seems the way ahead.
我认为，在基础研究领域，中国一定不能错过21世纪。
As I see it, China cannot afford to miss the 21st century in the field of fundamental research.
因此，中世纪英国的司法具有一定的相对独立性。
Therefore, the English judicature in Middle Ages had a comparative independence.
网络营销作为21世纪网络经济的核心，目前在我国企业的运用中仍存在一定的问题。
Being the core of the 21st century's network economy, the marketing still has some problems in China's enterprise.
21世纪高校校园绿化不仅要达到美化、改善校园环境的目的，而且还应使其成为教育的载体，这对提高大学生的综合素质起到一定作用。
In 21century, we make our campus green not only in order to make our environment better but also make it a part of education to improve students' comprehensive qualities.
然而就是在本世纪上半叶，人们还是以出身来定贵贱。
Yet even in the first half of this century people used to be classed according to their birth.
讽刺诗采用格律诗体，在一定程度上纠正了同时期汉语诗歌在诗体自由化上的极端，保证了汉语诗歌的格律传统在20世纪的被继承与发扬。
By the way, the extreme mistake made by free verse has been corrected and the tradition of metre poetic style of Chinese poetry has been inherited in 20th century.
讽刺诗采用格律诗体，在一定程度上纠正了同时期汉语诗歌在诗体自由化上的极端，保证了汉语诗歌的格律传统在20世纪的被继承与发扬。
By the way, the extreme mistake made by free verse has been corrected and the tradition of metre poetic style of Chinese poetry has been inherited in 20th century.
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