粪便潜血检查需要重复进行(每年一次或每两年一次)。
Faecal occult blood testing had to be repeated (annually or biennially).
世卫组织每两年一次共同赞助举行世界伤害预防与安全促进大会。
Every two years, WHO co-sponsors the World Conference on Injury Prevention and Safety Promotion.
1984年，1986年，1988年，在该市举行了每两年一次的艺术展览。
A biennial art show was held in the city in 1984, 1986 and 1988.
根据ESD文档，GSDO必须保持一个每两年一次发射战术级任务的发射率。
According to ESD documentation, GSDO must maintain a launch rate of one launch every two years for Tactical-level missions.
亚欧首脑会议于1996年在泰国曼谷首次召开，以后每两年一次，轮流在亚洲和欧洲举行。
With the first convention in Bangkok, Thailand in 1996, ASEM Summit is held in Asia and Europe alternatively every two years.
参议院和众议院有很大的差异，参议员所面临的重新选举才每六年一次，而不是每两年一次。
The Senate marches to a different drum than the House does, with senators facing re-election only every six years, not every two.
久负盛名的图书馆室内设计奖，由美国图书馆协会与国际室内设计协会联合组织举办，每两年一次。
The prestigious Library Interior Design Awards is organized every two years by the American Library Association together with International Interior Design Association.
我们的车每两年更换一次。
同时，英国皇家盲人协会还建议人们每两年进行一次正常的眼部检查。
In the meantime, the RNIB recommends that everyone has a normal eye test every two years.
基本药物的选择和使用专家委员会采用基于证据的透明程序，对该清单每两年更新一次。
The list is updated every two years by the Expert Committee for the Selection and Use of Essential Medicines, using a transparent, evidence-based process.
该奖项每两年为小说成就颁发一次。并且考虑到作者的一系列作品，作者的作品一般使用英语。
It is awarded every two years for achievements in fiction, and takes into account a body of work by an author whose books are generally available in English.
采用基于证据的透明程序，对《世卫组织基本药物标准清单》每两年更新一次。
The WHO Model List is updated every two years, using a transparent evidence-based process.
这个奖每两年颁发一次，最近的一次是上一年。
The award is given every two years. The most recent one was given last year.
UCCF的光明之旅每两年举办一次，是一种通过艺术宣传乌干达的方式。
The UCCF's Tour of Light embarks on its tours every two years - as a means of educating about Uganda through the arts.
昨天，菲利普·罗斯（Philip Roth）问鼎曼氏布克国际文学奖（theMan Booker International prize），该奖项每两年颁发一次，颁给作者的成批著作而不是单本小说。
YESTERDAY Philip Roth won the Man Booker International prize, given for a body of work rather than a single novel, and awarded every two years.
海龟每两年或三年筑巢一次，若有获得有用的数据，该计划必须长期长期坚持。
Turtles nest every two or three years, so for data to be useful, the program must survive long term.
当地球和火星靠的最近的时候，你可以每两年给基地重新补给一次。
You can resupply every two years, when Earth and Mars are at their nearest proximity.
该组研究对象中的226人依然在世，其中161人在研究中仍处于活动状态，即每两年回答一份调查问卷，并在每15年接受一次个人访问。
Of this group, 226 are alive and 161 are still active in the study, which requires the men to answer questionnaires every two years and to be interviewed personally every 15 years.
我们也可以利用游戏的特性，就如FIFA的更新版本，每一年或者两年进行一次更新，当这被用作游戏的时候，不需要嘲笑游戏的前作。
We could go with a game franchise which would be re-released like FIFA - newer and shinier each year or two, but not a mockery of its predecessor when it comes to gameplay.
联邦选举每两年举行一次，在十一月的第一个周一之后的一天，也就是周二。
Federal elections occur every two years, on the first Tuesday after the first Monday in November.
每两年更换一次电池——否则会出现临界级别的日志记录。
Replace the battery every two years — critical level log records will begin to appear before that.
在2007年邦汉姆斯拍卖行的拍卖中，南非艺术品同样赢得成功。现在南非艺术品拍卖会每两年举办一次，每次拍卖超过两天。
The same is true of the sales of South African art which Bonhams launched in 2007 and which are now held twice a year over two days.
议员每两年就要进行一次改选，这使得他们不停地忙于筹募竞选基金，由于初选制度，当地社会活动家不得不勤勉耕耘。
Every member of the House is up for re-election every two years. That requires perpetual fund-raising and, thanks to the system of primary elections, assiduous cultivation of local activists.
对于涉及处理石油、液气态化学品的港口，则要求每两年进行一次检查，同时还要建立紧急预案并进行演习。
Ports that handle oil, liquefied chemicals and gases are now required to carry out checkups every two years, as well as to come up with emergency response plans and to conduct drills.
该奖项每两年颁发一次。
每两年小镇就要召集众多风力能源公司，开一次世界上最大的风力能源会。
Wind turbines are built in its shipyards and every second year it plays host to the world's biggest gathering of wind-energy companies.
他说，“我们可能会感受到高达4级强度的地震，就像最近每两年我们就会经历的，而5级强度的地震估计每20年发生一次。”
"We can expect to see quakes up to magnitude 4 - such as the recent ones we've experienced - every two years," Prof Sandiford said. "magnitude 5 quakes can be expected every 20 years."
他说，“我们可能会感受到高达4级强度的地震，就像最近每两年我们就会经历的，而5级强度的地震估计每20年发生一次。”
"We can expect to see quakes up to magnitude 4 - such as the recent ones we've experienced - every two years," Prof Sandiford said. "magnitude 5 quakes can be expected every 20 years."
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