He was 14 years old when it happened.
这件事情发生的时候，他14岁。
The most ancient parts of the continental crust are 4000 million years old.
该大陆地壳最古老的那些部分有40亿年了。
它已经有100多年的历史了。
Now, my son is eight years old and my daughter is five years old.
现在我儿子八岁，女儿五岁了。
珍妮17岁。
I'll be 26 years old next Friday.
我下周五就26岁了。
我14岁。
他十岁了。
Nora thought he was seventeen years old.
诺拉觉得他有17岁。
He's only 24 years old and a drug addict.
他只有24岁，可已经是一个瘾君子。
他58岁。
I was a virgin until I was thirty years old.
我到30岁时还是个处女。
I was twenty years old and ready for anything.
我当时二十岁，什么都愿意去做。
A quarter of the residents are over 55 years old.
1/4的居民在55岁以上。
The dirty-faced waif was only five or six years old.
这个流浪儿脸上脏兮兮的，只有五六岁大。
Though ten years old, this book is highly recommended.
尽管已出版10年了，这本书仍备受推崇。
It's almost 15 years old. It isn't worth having it repaired.
这东西差不多15年了。不值得送去修了。
He was seven years old, small and fine-boned like his mother.
他七岁岁，骨架像他妈妈一样小而匀称。
He was barely 20 years old and already running his own company.
他只有20岁，却已经营起自己的公司了。
When my own son was five years old, I became eager for another baby.
当我儿子５岁的时候，我开始渴望要另一个宝宝。
These rocks have been dated radiometrically at two billion years old.
经辐射能探测，这些岩石形成于20亿年前。
At 20 years old he was not as strong, as fast, as agile as he is now.
在他20岁时，他没有现在这样强壮、迅速、敏捷。
In those days most people left school when they were only fifteen years old.
那时候，大多数人上学只上到十五岁。
He's described as around thirty years old, six feet tall and of medium build.
他被描述为大约三十岁，身高6英尺，体格中等。
Richard Strauss, then 76 years old, suffered through the war years in silence.
理查德·斯特劳斯当时已76岁，默默地熬过了战争岁月。
The average boy of 14 years old is only beginning his adolescent growth spurt.
一般14岁的男孩才刚刚开始他青春期的的迅猛发育。
I enjoyed experimenting with colours – it took me back to being five years old.
我喜欢尝试各种颜色–这使我回忆起5岁时的情景。
She was 15 years old at the time and lied about her age to get a marriage licence.
她当时只有15岁，为了拿到一个结婚证而在年龄上撒了个谎。
Fossil hunters have unearthed the bones of an elephant believed to be 500,000 years old.
化石寻找者们挖掘出了一头被认为有50万年之久的大象遗骨。
Young children are beginning their formal education sometimes as early as four years old.
幼儿有时早在四岁时就开始接受正规教育。
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