Republicans have a plan to insure three million more Americans at a cost of sixty billion dollars for the same period.

VOA: special.2010.02.27

They're not due--the first one's not due until next Monday or Wednesday, so you can pick any three days to do it during that period of time.

第一份作业的截止日期是下周一或三,因此你可以任意选择三天来记录饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.

但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效

耶鲁公开课 - 生物医学工程探索课程节选

During this period, hair grows at a rate of about three tenths millimeters a day, or one centimeter a month.

VOA: special.2011.04.05

It's the one where you have to get three shots over a period of six months, and so you have to remember to go back, you get a first ba--you get a first shot, you have to remember to go back after a month and get a second shot, you have to go back after six months and get a third shot.

这种疫苗需要在六个月里注射三次,所以你要记得再去,你第一次,你第一次注射后,你要记得一个月后再去注射第二次,六个月后,你还得再去注射第三次

耶鲁公开课 - 生物医学工程探索课程节选

A recent study showed that RTS,S reduced clinical cases of malaria by fifty-three percent over an eight month follow-up period.

VOA: special.2010.04.20

The study examined employment records for eight cities in Minnesota for a three-year period through two thousand six.

VOA: special.2009.05.27

They found that over a period of six years, planting three rows of trees reduced total dust and ammonia by more than half.

VOA: special.2009.09.08

The race to save two of America's big three carmakers is entering a new and intense period.

VOA: special.2009.05.01

Others who want to graduate in three years must pay for the same education as four-year students, but in a shorter period of time.

VOA: special.2009.07.23

During this period, there was an average of sixty-three attacks worldwide each year.

VOA: special.2009.06.16

During that period, she served as an advisor to three presidents.

VOA: special.2010.08.08

Congress passed three historic amendments to the Constitution during this period.

VOA: special.2010.02.04

over a period of three years.

VOA: special.2009.07.17

Republicans have a plan to insure three million more Americans at cost of $60 billion for the same period.

VOA: standard.2010.02.25

The program employs locals as field officers for a period of three years.

VOA: standard.2010.07.01

But a study of elderly patients discharged from a hospital's intensive care unit (ICU) shows that almost 40 percent did not survive beyond the research period of three years.

VOA: standard.2010.03.07

During a 13-year period, the women were separated into three groups.

VOA: standard.2010.03.30