He was twelve years old. Experts at the National Institutes of Health say good dental care starts at birth.

VOA: special.2009.03.11

Really about ten or twelve years ago, I began to think of human rights, I've always been concerned with social justice and intersection of social justice and religion.

十年还是十二年之前，我开始思考人权问题，我一直很关注社会正义问题,还有社会正义与宗教交点上的问题。

普林斯顿公开课 - 人性课程节选

I did have a friend who was beat up by about twelve or thirteen kids who were all between ten and eleven years old,

我有个朋友曾被十二三个孩子殴打，都在十岁和十一岁之间。

大城市是否危险？ - SpeakingMax英语口语达人

The study,published twelve years ago, suggested a link between autism and the vaccine against mumps, measles and rubella.

VOA: special.2010.02.24

Louis XIV when he was a kid, he was about twelve or thirteen years old, he lived in Paris.

在他还是个十二,三岁的孩子的时候,他住在巴黎

耶鲁公开课 - 欧洲文明课程节选

They were sentenced in June to face twelve years of hard labor for illegally entering North Korea.

VOA: special.2009.08.08

He wanted to create a series for girls who were about ten to twelve years old.

VOA: special.2009.08.24

Mrs.Clinton served as First Lady of the Arkansas for twelve years after Bill Clinton became governor.

VOA: special.2011.02.25

Twelve years later,during President Benjamin Harrison's administration, Congress passed a new silver purchase bill.

VOA: special.2010.06.17

There had been few complaints since the Commandments were posted almost twelve years ago.

VOA: special.2011.03.17

The group started about twelve years ago out of the Washington Storytellers Theater.

VOA: special.2009.03.27

Isabella was number two. For twelve years the most popular name was Emily.

VOA: special.2009.07.06

They followed the health of two thousand five hundred men for twelve years.

VOA: special.2009.10.20

When she was only twelve years old, Mary became the first person to find the almost complete skeletons of several animals that no longer existed on Earth.

VOA: special.2009.05.13

Kahn spent the last twelve years of his life on the project.

VOA: special.2009.12.13

The Admongo website is aimed at children eight to twelve years old.

VOA: special.2010.06.04

But potato breeders currently spend ten to twelve years developing new kinds.

VOA: special.2009.10.20

Breeders currently spend ten to twelve years developing new kinds of potatoes.

VOA: special.2009.11.03

She was twelve years old. Schools then were not designed for wheelchairs.

VOA: special.2010.07.28

Mary Lyon was head of the school for almost twelve years.

VOA: special.2010.06.27

He served in the Senate for a total of twelve years.

VOA: special.2009.08.30

His father died when he was twelve years old.

VOA: special.2009.05.31

Terms can last from two to twelve years.

VOA: special.2009.06.12

The oldest child was twelve years old.

VOA: special.2010.02.02

Twelve years before the historic Apollo 11 mission, the Soviets successfully launched the first artificial satellite called Sputnik into Earth's orbit.

VOA: standard.2009.07.16

On Tuesday, President Obama announced a plan to invest twelve billion dollars in community colleges over the next ten years.

VOA: special.2009.07.16

Four years ago, the labor agency estimated that more than twelve million people were in some form of forced labor.

VOA: special.2009.06.08

It was the first of more than twelve top hits for Little Richard over the next three years.

VOA: special.2010.07.09

Rosanne Cash's latest album, "The List",features twelve of the songs her father chose for her thirty-five years ago.

VOA: special.2009.12.04

The Obama administration plans to expand the program to twelve countries within the next two years.

VOA: special.2010.05.10