他大约三十岁。

He's about thirty years old.

他今年三十岁。

He is thirty years old this year.

他又高又瘦，一头金发。他大约三十岁。

He's tall and thin with blonde hair. He's about thirty years old.

另一个女人说：他很高很瘦，金色头发。 他大约三十岁。

Another woman says, He's tall and thin with blonde hair. He's about thirty years old.

三十岁了。

It's thirty years old.

我认为她大约三十岁。

I judged her to be about thirty years old .

我可比你大三十岁呀。

I'm almost thirty years older than you.

他那时三十岁。

He was then thirty years old.

安娜：嗯……我三十岁了。九月份我就三十一岁了。

Anna: Well … I'm thirty years old. I'll be thirty-one in September.

根据路加福音, 他当时大约是三十岁左右.

According to the Luke, he was about thirty years old at the time.