There are thirty students in my class.
我的班级里有三十个学生。
She celebrated her thirty birthday last week.
她上周庆祝了她的三十岁生日。
He ran thirty kilometers in the marathon.
他在马拉松中跑了三十公里。
The book has thirty chapters in total.
这本书一共有三十章。
I need thirty minutes to finish this task.
我需要三十分钟完成这个任务。
She bought thirty apples from the market.
她从市场买了三十个苹果。
The company employs thirty people in total.
这家公司总共雇用了三十个人。
He has been working here for thirty years.
他在这里工作了三十年。
The exam will take thirty minutes to complete.
考试将花费三十分钟完成。
There are thirty cookies in the jar.
罐子里有三十块饼干。
thirty days and nights 三十天三十夜
thirty pieces of silver 三十块银币
thirty minutes late 迟到三十分钟
thirty years old 三十岁
thirty-second interval 三十秒间隔
thirty-mile radius 三十英里半径
thirty percent discount 七折优惠
复数: thirties;
