我国每四年一次人口普查。
就职日发生每四年一次，约两个半月后的全国选举。
Inauguration Day occurs once every four years, about two and a half months after the national election.
每四年一次举办奥运会，让全世界的运动员共聚一堂。
To bring together the athletes of the world in the Olympic Games every four years.
答：欧洲杯是由欧足联成员举办的、每四年一次的赛事。
The UEFA European Championship is a quadrennial men's soccer competition held by the Union of European Football Associations.
法兰西斯：幸好是每四年一次，今天我就避开她们好了。
Francis: Once in four years. That's just as well. I'll keep well away today.
儒略历将太阳年划为365.25天，闰年366天，每四年一次。
The Julian calendar approximated the mean tropical year as 365.25 days and proposed 366-day leap years for every one divisible by four.
答：欧洲杯是由欧足联成员举办的、每四年一次的赛事。
A: the UEFA European Championship is a quadrennial men's soccer competition held by the Union of European Football Associations.
奥运会是每四年一次，每次均在不同的国家举行的一连串国际运动竞赛的活动。
The Olympic Games are a set of international sports competitions which take place every four years, each time in a different country.
为了表明这项增长迅速的运动的起源，易洛魁族人在世界杯上做为国家队比赛，比赛每四年一次。
To recognize the origins of this increasingly popular game, the Iroquois now compete as a national team at the world championships, which are held every four years.
该研究使用食物频率问卷来追踪参与者每四年一次，关于多久一次，平均而言，每种水果他们所吃的量都是标准的。
The studies used food frequency questionnaires to follow up the participants every four years, asking how often, on average, they ate a standard portion of each fruit.
奥运会每四年举行一次。
这个比赛每四年举行一次。上次这个队去参赛的时候，他们获得了全国第三名。
The competition only happens every four years, and the last time the team went, they won the third place in the nation.
在世界地球日前夕的一次演讲中，布隆·伯格先生介绍了“规划纽约”计划的第一份修正案，该计划需要每四年修订一次。
In an address on the eve of Earth Day, Mr. Bloomberg presented the first update to PlaNYC, which calls for such revisions every four years.
以首次发现它的澳大利亚天文学家的名字所命名的麦克诺特彗星C/2009R1，其明亮强度每四年左右出现一次，库克说。
The intensity of brightness seen in Comet McNaught C/2009 R1—named after the Australian astronomer who first spotted it in September 2009—only occurs once every four years or so, Cook said.
我们常常会忽视或抵制这样的要求，但在奥林匹克之火照耀下，这样的机会每四年就有一次。
It is a demand we often neglect or resist, but every four years we are reminded with this opportunity to see anew, aided by the light of an Olympic flame.
然而妇女并没有完全被排斥在体育比赛之外，她们有自己的运动会，也是每四年举行一次，叫做赫拉亚，以宙斯的妻子赫拉命名。
However, women were not completely excluded from competitive sports, as they had their own games, every four years as well, called the Heraea, after Hera, the wife of Zeus.
奥运会每四年举行一次。
自1991年，男女第一次结婚的平均年龄每四年才增加一次。
Since 1991, the mean age at first marriage has increased by just over four years for men and women.
国家情报委员会(NIC)在每四年发布一次的全球趋势报告详细阐述了奥巴马准备于1月份入驻白宫后的情况。
The global trends review, produced by the National Intelligence Council (NIC) every four years, represents sobering reading in Barack Obama's intray as he prepares to take office in January.
基里巴斯国会，称为Maneaba，每四年选举一次，共有42个席位。
The parliament of Kiribati, called Maneaba ni Maungatabu is elected every four years, and consists of 42 representatives.
世界杯(足球)，两个国际足球锦标赛，男足球锦标赛和女足球锦标赛，每四年举行一次。
World Cup (soccer), two international soccer tournaments, one for men and one for women, each held every four years.
在每四年进行一次的调查中，你不能够跟踪老虎数量的下降和存活。
You cannot track the decline and survival of the tiger population in surveys conducted every four years.
在每四年进行一次的调查中，你不能够跟踪老虎数量的下降和存活。
You cannot track the decline and survival of the tiger population in surveys conducted every four years.
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