The controversy about the classification and systematic position of Acorus L. has lasted for about two century.
摘要菖蒲属的分类和系统地位近两个世纪以来一直存在较大的争议。
The monastery consists of two churches. The first one was built in 642 A.D., and the second was completed in the late 17th century.
修道院包括了两座教堂。第一座建造于公元642年，而第二座则完工于17世纪末期。
Nearly a century ago, biologists found that if they separated an invertebrate animal embryo into two parts at an early stage of its life, it would survive and develop as two normal embryos.
近一个世纪前，生物学家发现，如果他们在无脊椎动物胚胎生命的早期阶段将其分成两部分，它会存活下来并发育成两个正常的胚胎。
Two fourteenth-century manuscripts of this text are still extant.
该文本的两份十四世纪的抄本仍然存世。
However, they industrialized rapidly in the second half of the century, especially in the last two or three decades.
然而，它们在下半世纪迅速工业化，特别是在过去二、三十年。
By the early eighth century, the empire had lost roughly two-thirds of the territory it had possessed in the year 600, and its remaining area was being raided by Arabs and Bulgarians.
到八世纪早期，帝国已经失去了大约三分之二的领土，其拥有了600年的剩余土地正在遭受阿拉伯人和保加利亚人的袭击。
The introduction of new screen formats was put off for a quarter century, and color, though utilized over the next two decades for special productions, also did not become a norm until the 1950s.
新屏幕格式的引入被推迟了四分之一个世纪，而颜色尽管在接下来的二十年里被用于特制产品，它也是直到二十世纪五十年代才成为一种常态。
This year's report said socialism with Chinese characteristics had entered a new era, and it drew up a two-stage development plan to build China into a "great modern socialist country" by mid-21st century.
今年的报告指出，中国特色社会主义进入了新时代，并提出分为两个阶段的发展规划，到21世纪中叶把中国建设成为“社会主义现代化强国”。
Within a century or two, all nations and most of humanity will be at or above today's Western living standards.
在一个或两个世纪，所有国家和大多数人将达到或超过当今的西方生活水平。
Or it may be a century or two.
或者可能需要再等一两个世纪。
In two important respects, the US today differs from Britain a century ago.
今天的美国与一个世纪之前的英国不同，有两个重要的原因。
The buffer may encompass expensive building materials whose earthquake flexibility is needed only for a minute or two every century.
缓冲层资源可能是昂贵的抗震建筑材料，其抗震挠性每个世纪只用得上一两分钟。
Large spiral galaxies like the Milky Way seem to have two or three per century.
像银河系那样螺旋状的大星系每世纪似乎会出现两到三个。
For much of the 19th century the two countries had similar potential, not least in an abundance of empty, fertile land to be taken over by European immigrants.
在19世纪很长一段时间内，两国除了有大量空白、肥沃的土地即将被欧洲移民霸占，还有着相同的发展潜力。
Over the last century, the two companies have rarely changed position.
过去一个世纪，这两家公司的竞争态势鲜有改变。
As the seventeenth century elapsed, two distinct types of agricultural operations developed there.
随着十七世纪的结束，两种明显的农业劳作在那里形成。
The past century witnessed two distinct warming periods, one occurred from 1900-1945, and another from 1975-1998.
过去一个世纪出现了两个明显的气候变暖期，一个发生在1900- 1945年，另一个在1975 - 1998年间。
Physics gave two things to the 20th century.
物理学给了20世纪两样东西。
Not least among those advances were two 13th-century inventions: ships that could cross oceans, and guns that could shoot the people the sailors met on the other side.
这些推动进步的发明中，特别要强调的就是13世纪发明的枪械和船舰。船舰使人类得以出海远航，枪械得以使人类在远航时遇到世界另一边的船员时可以拼杀。
Soueif's sweeping family saga describes two cross-cultural romances separated by nearly a century.
索埃弗的有广泛影响的长篇家世小说描述了两个分隔了近一个世纪的跨文化罗曼史。
And the relationship between our two countries will change the 21st century.
我们两国的关系将改变21世纪。
From "trust" to "promise" is an understandable change in meaning and so the word fiance turns up again a century or two before Shakespeare.
我们容易理解单词从“信赖”到“誓言”的转变，于是一两个世纪后，也就是莎翁时代之前，fiance再度现身。
You could do the same two lists for 19th-century inventions and then compare the evidence from all four lists.
你可以为19世纪的发明做同样两个表单，然后对照这四个表单上的证据。
The characters in 19th-century English novels chiefly comprise two social classes: aristocrats, and impoverished aristocrats.
19世纪的英国小说人物主要分为两个阶级：贵族和没落贵族。
If present rates of fossil-fuel consumption continue, the doubling of carbon dioxide from fossil fuels will occur sometime within the next century or two.
如果以现有的水平继续消耗化石燃料，二氧化碳浓度翻倍会在未来的一两个实际的某个时期发生。
By mid-century, two-thirds of the world's population will live in cities. The demands for energy, water, housing, and education will be enormous.
到本世纪中叶，世界人口的三分之二将居住在城市，对能源、水、住房和教育的需求将是巨大的。
Until the late 19th century, China and India were the world's two biggest economies.
直到19世界末，中国与印度还是世界上最大的两个经济体。
The United States and Europe were no better off a century or two ago than Africa is today.
美国和欧洲一两个世界以前不见得就比今天的非洲富裕。
The United States and Europe were no better off a century or two ago than Africa is today.
美国和欧洲一两个世界以前不见得就比今天的非洲富裕。
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