1.
Ten years Regret VS.Thirty years Striving--on the Abolition and Reform of the College Entrance Examination in Modern China;
十年之痛 三十年之痒——论高考的废与改
2.
30 Years' Meritorious Service Certificate
三十年优良服务奖状
3.
He lived in Canada in the thirties.
三十年代他住在加拿大。
4.
These mats will wear for 20 or 30 years.
这种草席能用二三十年。
5.
These mats will wear for 20 to 30 years.
这些草席能用二三十年。
6.
Payments over thirty years?
三十年分期付款吗？
7.
He has been thirty years out of college.
他大学毕业已三十年了。
8.
I have been married for more than 30 years.
我们结婚已经三十年了。
9.
rural life in the Thirties.
三十年代的农村生活
10.
Praescriptio triginta annorum (=Praescriptio longi temporis)
三十年时效（最长时效）
11.
She is three years off thirty.
再过三年她满三十岁。
12.
"David was thirty years old when he became king, and he was king for forty years,"
大卫登基的时候年三十岁，在位四十年。
13.
If the abusing goes on for another thirty-five years, that will amount to only seventy years.
再骂三十五年，还只有七十年。
14.
There are eighteen classes in three grades.
三个年级有十八个教室。
15.
She has been on the stage for over thirty years.
她有三十多年的艺龄。
16.
over 30 years of experience
三十余年的教学经验
17.
There are three hundred and sixty five days in a year.
一年有三百六十五天。
18.
Ted Williams was 83.
泰德享年八十三岁。