Dear Joshua, I'm writing to tell you that I am now thirteen Years old.

亲爱的约书亚，我写信告诉你，我现在十三岁了。

So I am thirteen years old.

因此我十三岁。

This boy is thirteen years old .

这个男孩十三岁。

I am thirteen years old, and I come from South Australia.

我十三岁了，我来自南澳大利亚。

I am thirteen years old, and I come from Mount Elm Sheep Station in South Australia.

我13岁，来自南澳大利亚的艾尔姆山大牧羊场。

I spent some parts of every year at the farm until I was twelve or thirteen years old.

在我十二、三岁前，每年都有一段时间是在农场度过的。

When I was about thirteen years old, back home in Indiana, Pennsylvania, I had a DOG named Bounce.

大约13岁时，在宾夕法尼亚州印第安纳老家，我有只名叫鲍恩斯的狗。

When I was about thirteen years old, back home in Indiana, Pennsylvania, I had a dog named Bounce.

大约13岁时，在宾夕法尼亚州印第安纳老家，我有只名叫鲍恩斯的狗。

When I was about thirteen years old , back home in Indiana, Pennsylvania, I had a dog named Bounce.

大约13岁时, 在宾夕法尼亚州印第安纳老家, 我有只名叫鲍恩斯的狗.