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。
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。
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。
She says there are two layers showing the association, one about 30,000 years old, the other 35,000 years old.
她说有两层显示了这种联系，一层有大约3万年历史，另一层3万5千年。
珍妮17岁。
Nora thought he was seventeen years old.
诺拉觉得他有17岁。
他58岁。
A quarter of the residents are over 55 years old.
1/4的居民在55岁以上。
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。
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。
Children don't complete their set of 20 baby teeth until they are two to three years old.
孩子到两三岁时才长齐20颗乳牙。
Fans must be over 18 years old.
粉丝必须18岁以上。
我的儿子今年十二岁了。
杰克只有四岁。
My daughter is nine years old.
我的女儿九岁了。
Mr. Brown is already 89 years old.
布朗先生已经89岁了。
You must be at least 20 years old.
你必须至少达到20岁。
Things changed when she was eight years old.
在她八岁时，一切都变了。
I know he is already 30 years old.
我知道他已经30岁了。
The former principal is now almost 90 years old.
前任校长现在快90岁了。
Today is Tom's birthday. He is seventy years old.
今天是汤姆的生日。他七十岁了。
The Grand Canal is more than 2,500 years old.
大运河有2500多年的历史。
It's my daughter's birthday today. She's eighteen years old.
今天是我女儿的生日。她十八岁了。
I first heard it when I was five years old.
我第一次听到它是在我五岁的时候。
The photo was taken when I was six years old.
这张照片是我六岁时拍的。
My life was perfect when I was twelve years old.
在我十二岁的时候，生活简直完美。
Wang Kai is a boy who is 15 years old.
王凯是一个15岁的男孩。
我七十岁了。
Chelsea Fearce is seventeen years old.
切尔西·菲尔斯17岁了。
你32岁。
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