The World Health Organization says the United States has forty-one births for every one thousand girls age fifteen to nineteen.

VOA: special.2010.05.13

Then he had a machine that granted each pigeon one piece of corn every fifteen seconds; that's very, frustratingly slow for a hungry pigeon to get one piece every fifteen seconds.

他们设计了一个能保证,每隔15秒给鸽子喂一玉米粒的装置,对饥饿的鸽子来说是杯水车薪,每15秒才只有一粒玉米

耶鲁公开课 - 金融市场课程节选

There were some twelve to fifteen different widths of railroads in the Northern states alone by the 1850s, and you could go into one town on a gauge, i don't know, three feet wide but on the other side of town it would come out four feet wide.

在五十年代,单就北方州的铁道,就有十二到十五种不同的轨距,你可能在一条三英尺宽的铁道上进镇,但在另一边出镇时,它变成四英尺宽了

耶鲁公开课 - 美国内战与重建课程节选

One of the United Nations Millennium Development Goals for two thousand fifteen is to reduce death rates in young children by two-thirds.

VOA: special.2009.10.19

The study estimated mortality rates for people age fifteen to fifty-nine in one hundred eighty-seven countries.

VOA: special.2010.05.05

In fifteen eighty-seven, more than one hundred people arrived from England to live on the island.

VOA: special.2009.08.17

And Greece's public debt is equal to at least one hundred fifteen percent of its economy.

VOA: special.2010.05.07

More intense activities reduce the suggested amount of time to one hour and fifteen minutes.

VOA: special.2010.06.08

At one time,the islands were home to about fifteen different kinds of land turtles.

VOA: special.2009.12.16

They returned to Roosevelt Field eight days, fifteen hours and fifty-one minutes later.

VOA: special.2009.03.18

The earthquake sent large fermenting vats and one hundred gallon casks of rum, some aged fifteen years, crashing to the floor.

VOA: standard.2010.06.01