They must be at least twenty-five years old, an American citizen for at least seven years and live in the state they represent.

VOA: special.2009.08.14

Milton has just returned home after seven years at the university, a university education so generously financed by his father who was actually now 70 years old, and John Milton, Jr.

弥尔顿在7年的大学学习结束之后回到家中，他父亲如此慷慨的资助他完成了学业,而此时弥尔顿的父亲已经70岁了。

耶鲁公开课 - 弥尔顿课程节选

Scientists believe sandals found in the Arnold Research Cave in the American state of Missouri are about seven thousand five hundred years old.

VOA: special.2010.08.03

It fact,the team of archeologists first thought it was about six or seven hundred years old.

VOA: special.2010.08.03

He was eighty-seven years old. Doctor Seuss's influence remains through the books he wrote and illustrated.

VOA: special.2010.05.02

The Gerardia is believed to be about two thousand seven hundred forty-two years old.

VOA: special.2009.05.12

She started learning to play the piano when she was about seven years old.

VOA: special.2009.09.04

When Sarah was seven years old, her parents died of the disease yellow fever.

VOA: special.2010.03.28

The boy's mother left the family when he was seven years old.

VOA: special.2010.05.16

Barack Obama was only seven years old when Neil Armstrong became the first man to set foot on the moon.

VOA: standard.2009.07.20

She has two American-born sons who are five and seven years old, and who are staying with her sister in the United States.

VOA: standard.2010.06.07

I was seven or eight years old and from that age on I really got keen at going to the sea and knowing about the ocean."

VOA: standard.2010.06.21

"I started playing Tennis when I was seven years old and my mom she is interested in Tennis too and she loves the sport and she just inspired me,".

VOA: standard.2009.12.14